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Internet # 316957725

Model # 43005/40+US4004

4300 1.8 Amp Variable Speed 1/32 in Corded Rotary Tool Kit with Ultra-Saw 7.5 Amp Corded Compact Saw Tool Kit

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  • US40: 3-in-1 saw that can be used in a variety of materials
  • US40: easier to use and more compact than a circular saw
  • 4300: most powerful and versatile Dremel rotary tool
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Product Details

About This Product

The combo of Dremel's most powerful and versatile rotary tool, the 4300, and the Dremel Ultra-Saw, is all you need to get your home DIY projects done. The Ultra-Saw is a compact saw that allows you to do rip and flush cuts in multiple materials like wood, metal, plastic, tile, and more. It's much smaller and easier to use than a circular saw, but just as powerful. And with the Dremel 4300 you can work on all finishing details, get to tight spaces that no other tool can get, and work with precision. You can cut, sand, grind, polish, engrave, route, drill, remove grout and more with a Dremel rotary tool, all by changing the accessory. This version includes 5 attachments and 40 accessories that will increase the possibilities you have.


  • Shop all Dremel Ultra Saw Tools & Wheels here!
  • 4300: universal 3-jaw chuck for easy accessory changes
  • 4300: quieter and cooler running due to improved air flow
  • 4300: our most powerful motor for maximum performance in demanding applications
  • 4300: compatible with all Dremel rotary tool attachments and accessories (some applications require the use of a collet system, included in kit)
  • 4300: variable-speed with electronic feedback for consistent performance in all applications
  • 4300: separate on/off switch and speed control dial for added convenience between jobs
  • 4300: replaceable motor brushes extend tool life
  • 4300: cool-running ball bearing construction for smooth and quiet operation
  • 4300: industry leading customer support
  • US40: 7.5 Amp power for faster cutting and tougher applications
  • US40: 3-in-1: cutting, flush cutting and surface preparation applications including rust, paint and thin set removal
  • US40: improved drive-train lasts 3X longer than the Saw-Max and metal foot and guard handle tough applications
  • US40: kit includes us500 4 in. carbide wood cutting wheel, us600 4 in. carbide wood flush cutting wheel, us510 3.5 in. metal cutting wheel
  • US40: excellent line of sight for precise, confident cuts
  • Click here for more information on Electronic Recycling Programs
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Product Information

Internet # 316957725

Model # 43005/40+US4004

Additional Resources

Shop All Dremel


Dimensions: H 2 in, W 2 in, D 9 in


Product Depth (in.)

9 in

Product Height (in.)

2 in

Product Width (in.)

2 in


Amperage (A)

1.8 A

Chuck Capacity (in.)

1/8 in

Chuck Type




Cord Length (ft.)


Corded Tool Type

Rotary Tool





Maximum Speed (RPM)

35000 RPM

Power Tool Features

Keyless Chuck, Variable Speed

Product Weight (lb.)

1.175 lb



Tools Product Type

Power Tool

Variable Speed


Warranty / Certifications

Certifications and Listings

CSA Certified

Manufacturer Warranty

Limited 2 Year

Questions & Answers

Q:I want to know this Dremel 4300 1.8 amp Is this Brushless? Is this 120V ~240V Is the Hz - 60Hz?
by|Jan 30, 2024
1 Answer
Answer This Question

A:  The Dremel 4300 is NOT brushless. The 120V 50 ~ 60Hz is the Voltage rating. For further assistance, please contact us at 1.800.437.3635, Monday - Friday, 8AM - 5PM CST.

by|Jan 30, 2024
    Q:Will the 4300 collet handle a 3/32 bit ?
    by|Jan 12, 2024
    1 Answer
    Answer This Question

    A:  The 4300 tool will need the Dremel Chuck #4486 or the Dremel Collet Set #4485. The 3/32" collet is needed to hold the 3/32" bit in the tool. The 4300 tool only comes with an 1/8" collet.

    by|Jan 16, 2024
      Q:Does this tool come with a bit to cut cemet board
      by|Nov 9, 2023
      1 Answer
      Answer This Question

      A:  The Dremel 4300-5/40 Rotary Tool Kit does not include an accessory to cut cement board. For further assistance, please contact us at 1-800-4-DREMEL (1-800-437-3635), Monday-Friday, 8A-5P CST.

      by|Nov 9, 2023
        Q:Does this kit come with a 402EZ ock mandrel?
        by|Oct 16, 2023
        1 Answer
        Answer This Question

        A:  The Dremel 4300-5/40 Tool Kit does include the EZ402 EZ Lock Mandrel. For further assistance, please contact us at 1-800-4-DREMEL (1-800-437-3635), Monday-Friday, 8A-5P CST.

        by|Oct 17, 2023
          Showing 1-4 of 55

          Customer Reviews

          4.5 out of 5

          • 4.5 out of 474 reviews
          • 89% recommend this product
          Filter by:
          Showing 1-10 of 474 reviews
          What a great tool! So easy to use with the...
          What a great tool! So easy to use with the chuck, which takes all the accessories. I restored this 1920s lock box that was globbed with paint by using vinegar, and the dremel, and a tiny bit of black acrylic paint rubbed into the scratches.
          • Verified Purchase
          3 found this review helpful
          Scary fast!!! Love, Love,$it!!! The extra amperage in the 4300 series. Makes you actually need to...
          Scary fast!!! Love, Love,$it!!! The extra amperage in the 4300 series. Makes you actually need to slow it down from time to time. Just because it cuts so fast. I sometimes cut off a little more than planned. That's a personal issue and no fault of this amazing tool. So versatile, that when I think there's not a tool for the job. End up with the Dremel 4300 series in hand. Finish the job likity split. So that now, I just make sure my Dremel 4300 and vast assortment of attachments are with me at every job. Gives me complete confidence that the job will be finished on time and at the highest quality level a perfectionist like myself demands. Can't thank you enough at Dremel for producing the finest rotary tool on the market. Absolutely nothing bad to report about this fine power tool. Great job!!!
          • Verified Purchase
          • Recommended
          10 found this review helpful
          Very powerful and versatile!
          I had an older Dremel model from a couple years ago, and figured it was time to upgrade. This model comes with even more attachments and accessories than my previous. With 5 attachments, and over 40 different holders, sanders, and mounters, they give you an excellent array to get started with. The design of this rotary tool is very sleek, and not too heavy. It's speeds range from 500 rpm, to around 35,000 rpm thanks to its internal feedback circuitry, while also being quiet than some of it's predecessors. At high speeds it retains its smooth feeling, without sacrificing any power. The power cord measures in at around 7 ft, making it decent enough to move around with it, or with an extension cord. Overall, this is definitely an improvement in the models, and a superior rotary kit in general.
          • Recommended
          10 found this review helpful
          This DREMEL variable speed rotary tool has a nice sleek body design for a comfortable grip no matter how you hold the tool. The 4300 boasts Dremel's most powerful motor with electronic feedback circuitry, redesigned airflow system and cool running ball bearing construction allow the tool to run quieter and smoother for a consistent performance thru any task you put in front of it. I have had a few Dremel rotary tools including a single speed ( very noisy ) version that I still own. They have always been handy for multiple tasks but between the noise level and having to change collets to match the accessory I am using It becomes a nuisance to use. Dremel has created a three jaw chuck with a EZ Twist nose cap wrench on this 4300 series tool that accepts all accessory shank sizes for quick and easy accessory changes. This rotary tool kit also includes 5 attachments including a pivot light to illuminate the area you are grinding, cutting, etc. a clear shield, garden tool sharpener, cutting guide and a sanding/grinding guide. Also includes a hard case to store tool, attachments and array of included accessories. I really like the shield attachment that protected me from metal and cutting residue while I was cutting the excess end off a bolt I used to fix a cross member on my porch swing. The garden tool sharpener made sharpening a small axe I own very easy. This tool kit includes the regular collet and wrench system for use during certain applications and for those of you who are fond of the original collet system. I am sure this Dremel will last a long time and perform flawlessly.
          • Recommended
          3 found this review helpful
          The Best Dremel Tool yet
          This Dremel 4300 variable speed rotary tool offers the highest performance and most versatility of all Dremel rotary tools. The 1.8 amp corded motor plus electronic feedback circuitry enables consistent performance at all speed levels. (5000-35,000 rpm) Dremel 4300 can use all existing Dremel accessories and attachments plus high-performance attachments to complete the widest range of projects. The 360 ergonomic body provides a 360 Degree grip zone for comfort and control in any grip position. • The plastic storage case is marked with icons showing where each accessory should be placed. • Has separate on/off switch and speed control dial. • Includes 5 attachments and 40 assorted accessories and accessory case. • Pivot Light to illuminate your work (Battery Powered) • Universal 3 Jaw chuck with 1/32-1/8 inch capacity. • Easy grip Nose wrench This High End Dremel tool replaced my 25 year old Dremel tool and WOW, what an improvement! It should last me the rest of my life and I can pass it down to my grandson. Made in Mexico.
          • Recommended
          5 found this review helpful
          This replaced my tired old model 395 which has served me well for decades. Powerful 1.8 Amp motor is not brushless. Brushes can be easily replaced though. Not sure what I think of the 3 jaw chuck. It is fine for light duty work but I still prefer a collet for most work. The 5 attachments include a really handy light that mounts on nose of tool only it is not powered by the tool but needs batteries. The on-off button is located well but the speed control wheel is near the tail of tool and needs a second hand to adjust. The storage case is solid with plenty of room for more attachments and the accessory case snaps in place inside the storage case. The included attachments fit tightly in their special place so nothing rattles around in transport. All the included accessories are useful for most people. I like the drywall cutter with the cutting guide base for trimming out electric boxes & door/window frames. Much lighter than my old zip tool.
          • Recommended
          8 found this review helpful
          Didn’t need for the job. Went another way
          • Verified Purchase
          Well made machine, comfortable to use, not to heavy. Convient storage case .Definitely recommend. Lots of choices of bits to use. Light also helps while running when needed.
          • Verified Purchase
          • Verified Purchase
          Showing 1-10 of 474 reviews