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Internet # 202563344

Model # DR34116

Store SKU # 405453

1/2 in. Radius Rounding Over Router Bit

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  • For CNC, automatic, hand-held & table-mounted portable routers
  • Cuts all composition materials, plywood, hardwood & softwood
  • TiCo Hi-Density Carbide for flawless finishes and longer life
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Product Details

About This Product

Take your woodworking repertoire to the next level with the Diablo 1/2 in. Radius Rounding Over Carbide Router Bit. It's outfitted with a bottom bearing that glides along your workpiece to produce clean, uniform curved edges every time. The solid carbide construction stands up to heavy-duty use and withstands high temperatures to produce controlled, safe cuts.


  • High-density TiCo carbide body with titanium construction offers a long cutting life
  • Perma-SHIELD nonstick coating helps protect the bit from heat, rust and pitch buildup
  • Razor-sharp bit produces an ultra-fine, splinter-free finish
  • Requires a minimum chuck size of 1/4 in.
  • Great for cutting all composition materials, plywood, hardwoods and softwoods
  • Red router bits are a registered trademark of Freud America, Inc.
  • Overall diameter = 1-1/2 in.
  • Bearing diameter = 1/2 in.
  • Carbide height = 3/4 in.
  • Large radius = 1/2 in.
  • Shank diameter = 1/4 in.
  • Overall length = 2-1/2 in.
  • Return Policy

Product Information

Internet # 202563344

Model # DR34116

Store SKU # 405453

Additional Resources




Cut Radius (in.)

1/2 in

Product Height (in.)

5.65 in

Product Width (in.)

1.97 in




Number of Pieces




Router/planer type




Tools Product Type

Power Tool

Questions & Answers

Q:What is maximum RPM router you can use this bit with?
by|Mar 14, 2024
0 Answer
Answer This Question
Q:Will this bit work to round over yoir 3/4" Pop;ar boards? I want to run on both sides to get a fully rounded edge.
by|May 20, 2021
2 Answers
Answer This Question

A:  Yes with the correct adjustments to your router.

by|May 17, 2023

A:  Hello GM! In order to get a fully-rounded (or bullnose) edge on ¾” thick material, you should consider our 3/8 in. Radius Rounding Over Router. To check it out, just search homedepot.com for Product #DR34-114. Whichever bit you use, be sure to use a router table fence or edge guide for the second cut.

by|Jun 7, 2022
    Q:Can i get 2-1/2 in. of this product.
    by|Jun 7, 2020
    1 Answer
    Answer This Question

    A:  Hi Kay! We'd love to help, but need more information. To better address your concern, please contact our customer support team at https://www.diablotools.com/contact. We're here to help!

    by|Feb 17, 2023
      1 found this answer helpful
      Q:What routers are compatible w/this bit? I purchased this bit for my Makita RT0701C 1-1/4 HP Compact Router and it's too large to fit through the fixed base. From what I can find online, most people make their own bases out fo wood to overcome this, but is there a highly recommended router that will fit this 1 1/2" diameter bit out of the box (no matter the base installed?
      by|May 18, 2018
      1 Answer
      Answer This Question

      A:  Should be. I am using a Porter Cable1-1/2HP.

      by|Oct 27, 2022
      Showing 1-4 of 5

      Customer Reviews

      4.7 out of 5

      • 4.7 out of 93 reviews
      • 96% recommend this product
      Filter by:
      Showing 1-10 of 93 reviews
      Good quality router bit.
      • Verified Purchase
      this router bit routs!
      • Verified Purchase
      I purchased this for rounding over hardwoods and it does an excellent job. Very clean cut. I have not put a ton of time on it yet so I can't speak to the longevity but the price is fair and I would recommend this to anyone who needs to make this type of cut with a 1/4" collet router.
      • Verified Purchase
      There is a reason some router bits are more expensive than others. They work better, hold an edge longer, and the bearings don't burn up. Needed this to round off 5/4 treated deck board. Did not burn wood and no visible tear out. I would buy Diablo bits again.
      • Verified Purchase
      • Verified Purchase
      • Verified Purchase
      Perfect bit for making quarter round mounding. Easy to attach to router.
      • Verified Purchase
      Worked great stays sharp! Diablo Strikes again!!
      • Verified Purchase
      1 found this review helpful
      Everything Diablo is top notch. You get what you pay for, no exception with their products across the board.
      • Verified Purchase
      Little expensive, but gi ves smooth cut
      • Verified Purchase
      Showing 1-10 of 93 reviews