Toughest small right angle driver attachment on the market. Gears housed in die-cast body for improved durability and performance. 3 sets of ball bearings provide long-lasting and smooth operation. Ergonomic handle provides firm, comfortable grip. Magnetic 1/4" hex socket accepts and holds standard 1/4" driver bits. 1/4" hex shaft fits most quick change and standard chucks. Three 1" bonus bits (No. 1 Phillips, slotted, and square drive).