Bosch 2608596119 HSS-G Pilot Drill Bit For 11mm Hex Shank Arbour 102mm The Bosch 2608596119 drill bit is designed for use with an 11mm hex shank arbour. It is made from hardened steel for extreme strength and durability and will fit hole saws with a diameter of 32-210mm. Drilling a pilot hole helps prevent the material from splitting and slipping. Features: Designed for use with an 11mm hex shank arbour, Bosch 2609390034 When used with an arbour, will fit hole saw diameter sizes 32-210mm HSS-G is long lasting and durable Drilling a pilot hole will help to prevent the material from splitting and slipping Specification: Total length: 102mm To fit: 11mm Arbour