I took a ground rod driver and used that for the shaft. Then took a steel pipe that fit the round stake , I think I used 3/4" black pipe or 1" then welded a nut on one end. Took a grade 8 bolt and threaded and welded it to the nut. Cut off the Hex End and fit it to the rod driver. Instead of welding it I drilled a hole though both and inserted a nail. Allows to change for steel stakes or ground rod.Eric R said:Where did you get the bit? Did you have to make one?