Model # 20420

Internet #202400872

Oz-Post OH-01 16 in. x 1-1/8 in. Oz-Hammer Driver (1-Each)-DISCONTINUED

Discontinued Oz-Post

OH-01 16 in. x 1-1/8 in. Oz-Hammer Driver (1-Each)-DISCONTINUED

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Product Overview

The OH-01 Hammer- Driver for Jackhammer are required for customers that want to drive the Oz-Posts in the ground with a jackhammer. Some Oz-Posts require Hammer-Spacers to be used in conjunction with this driver. Please refer to the model below to determine which Drive is required. Our exclusive Oz-Post driver is a high grade steel attachment that fits most common jackhammers available at rental centers. If you are planning to rent a jackhammer most rental centers 60# electric jackhammers that are perfect for any size job. Ask the rental center to clarify that the jackhammer has a 1-in. hex chisel holder with a retaining collar. For use with (no Spacer required): ISW-850, IS-600, I2-850, I2-600, (Spacer required for Oz-Post Models): I25-850, I3-850, T4-850, T4-600, P4-850, P5-850, T46-850, C4-850, C4-600 and T6-850.

  • Fits jackhammers with 1- in. hex chisel holder with retaining collar
  • 1-Piece each
  • High grade steel tool
  • Suitable for contact with acq approved lumber

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Accessory Type
Commercial/Residential Use
Commercial / Residential
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty

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Customer Reviews

OH-01 16 in. x 1-1/8 in. Oz-Hammer Driver (1-Each)-DISCONTINUED is rated 2.7 out of 5 by 7.
Rated 1 out of 5 by from Steel so soft it fractured and mushroomed after 3 posts I rented a jackhammer from Home Depot to use this driver to set 3 Oz-Post (4x4). I had the recommended spacer as well. After 3 posts I tried to remove the driver from the jackhammer and it would not come out. I took the jackhammer back to Home Depot and the guys in the rental department actually had to take the end apart to get the driver out. It had fractured clear through, then mushroomed so much at both ends of the fracture site that it was wedged into the jackhammer solidly. To their credit, the guys at Home Depot rental did not charge me for this (even though I had not purchased the optional damage waiver...last time I do that.) Thanks Home Depot, but Oz-Post has a bunch of low-quality drivers out there that they need to recall, judging from some of the other reviews.
Date published: 2012-09-08
Rated 5 out of 5 by from Performed as advertised It's unfortunate that one must purchase this piece of hardware to drive the Oz Posts with a jackhammer. Check with your rental company to see if they might have one they can rent with the hammer. Aside from the one-time use it received, it performed as it should, driving nearly 40 Oz Posts into some very hard Texas clay soil.
Date published: 2011-05-07
Rated 1 out of 5 by from One of the worst product I ever purchased. Bad product. How can a steel tool, 1 1/8" dia thick, breaks into two? I used a 35lb jack hammer as it was designed for. For your information this would be the second "Oz-Hammer Driver" in line. The first one broke about 15 days earlier. Really bad product. It caused total upset to my project time line.
Date published: 2011-10-24
Rated 1 out of 5 by from broken driver The driver fits the spacer okay making it easier to pound in the Oz Stakes. The driver broke in half after 8 posts were driven in. We were using a small one may demolition hammer to drive the stakes and striking straight down per the instructions when the driver sheared in half.
Date published: 2010-09-20
Rated 1 out of 5 by from Low grade steel The driver is made from low quality steel. The steel is so soft that the end inside the jackhammer mushroomed so much after use that the driver could not be removed from the tool.
Date published: 2012-03-30
Rated 5 out of 5 by from Used to drive the Oz-posts The product worked like a dream. With the jackhammer, this tool and the oz-post putting in our posts was a breeze
Date published: 2012-06-05
Rated 5 out of 5 by from Does what it's made for In conjunction with the recommended spacer, it works as advertised.
Date published: 2011-09-07
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