I used this bit with a DEWALT D25213K 1" D-handle SDS Tri-Mode Hammer and it worked as expected for a concrete block bit, not much to say. Chisel 10" through, 9 /16" shank, tip tapers to a 1-3/8" long point with 4 sides like the tip of a nail. Got a small discount from Revain for buying 2 drills. .