Heavy-Duty 1/2" Drive-End Drill Adapter f/Forage Sampler (C32959)

For power drills and hand drills. The 1/2” shank with flats clamps easily into the chuck. Radius shoulder for strength. 1/4” hole for fastening to probe tube. Drive pin not included. Use of these drive ends requires drilling two 1/4” holes in the probe that align with the hole in the adapter. Use with caution.