M-Drive MD22120 - Allen Ball Hex Spare Bits 2.0mmM DRIVE Hex Allen Wrench Spare Tip 2mm Ball Hex High quality hex allen wrench spare HSS steel ball tip. Specs: Length: 100mm Tip Bits Hex Size: 2mm (ball) Tip Bits Diameter: 3mm Tip Bits Material: High quality HSS Suitable for: M3 hex screws with countersunk head M3 hex screws with button head Note that a ball head hex allen tool tip always wear faster that a straight hex. They are also more easy to brake when dropping them on the floor or using too