Bosch Power Change™ 3-3/8" HSS Pilot Drill

Model HB85PB

Pilot bits easily snap into the mandrel without set screws and a threadless design prevents seizing up in the mandrel. The system also features a positive lock design to minimize wobble, a common problem with conventional mandrels. The Power Change™ mandrel accepts any 1/4" hex shank power accessory including spade and power screwdriver bits
Simply snap the hole saw off the mandrel for easy plug removal. When the cup is re-attached to the mandrel, the pilot drill will push the plug out
Power Change™ bi-metal hole saws feature Progressor Tooth Geometry, combining cutting teeth with specially designed chip-removal teeth for super-fast cutting action in metal and wood