DeWalt ground rid driving bit and other parts

All the parts you need to make your own rebar driving bit for use with the Harbor Freight demo hammer.

A 3/4" Dewalt ground rod driving bit that has a SDS Max shank.

A Simpson bearing plate that has a 3/4" hole.

You'll also need access to a 20 ton hydraulic press, welder, and a few pennies.  A vice would be useful too.

DeWalt ground rid driving bit and other parts