The HD90 is a 90˚ bevel gear offset drive head, featuring heavy die cast metal construction, hardened steel gears and shafting with sealed ball bearing support, quick release magnetic drive chuck, and a multi-position adjustable handhold stabilizer arm with a soft tactile rubber grip. Designed for use with high power 14 or 18 volt cordless rotary drill / drivers and suitable for driving any 1/4” quick release hex drill or screwdriver bit accessory, the HD90 will handle input torque up to a maximum of 500 in-lbs.