Ozco 20480 JDK-10 Jackhammer Driver Kit, Black Galvanized Steel (1 per Pack)

I ordered this to drive in some cheap post spikes that were 36" tall and next to impossible to drive in with a sledge without breaking them. Bought a cheap jackhammer from amazon and obviously it didn't fit. Spent about 10 minutes with an angle grinder to grind the end of the shaft down to a rough round shape and smaller size that then fit in the jack hammer. It doesn't lock in place but I believe with some additional grinding it would. As others have mentioned it does not fit the cheaper jackhammers, but since it's solid steel it can easily be modified to fit and once it is it worked as expected.

I know the product says it's an inch and an eighth, but it does not fit in in 7/8, it's cut too big from the factory, and doesn't fit in a standard jackhammer. It might be some kind of metric of some sort

Fit my Bauer 15amp 70lb pro breaker hammer perfectly. Will drive post or pipe into ground nicely

I saw a review that said it fit a 1.25” pipe cap for driving a well pipe. It does not fit the heavy duty ones made for driving. Looks good and solid though, still trying to find a way to make it work for our sand point well. Will leave another review if I can find a way to make it work.Update. I tried to modify it but the weld lasted less than 5 minutes. If the square tube was about 3/16” bigger I think it would fit a drive cap. I’m going to look for some square tubing that’s just little bigger.

We started building our 1/4 acre fence with post hole diggers by hand, and then switched to ozco post anchors using a sledgehammer. But winter is coming so we needed to get it done fast. We bought this kit and rented a jackhammer for 5.5 hours to finish the last 9 remaining post anchors (36" deep). Very easy and effective. Should have done this from the start. Just make sure to drive each anchor in little by little and check the level often so that it doesn't go in crooked. Those anchors are hard to get out of the ground once they're in.

Need to drive a Sandpoint well head? Fits perfect over a galvanized 1-1/4 cap. Unfortunately for me the 60lb jackhammer couldn't drive the point through gravel and clay in a timely manner.

When driving a shallow sand point you need the bit to be one piece, not sure how the manufacturer envisioned holding the adapter then running a Jack hammer, most shallow wells are ran using 1 1/4” galvanized well pipe, this bit would even fit the driving cap required so you don’t damage the threads, I ended up welding the two pieces together abs sacrificing a nipple to use this product, I wouldn’t recommend this mess to anyone.

Does not fit the Jack Hammer. However it was recommended.