HSS Bi-Metal variable pitch tooth 4-btpi with 5% cobalt content for high durability and extended working life. Suitable for wood, gypsum board, plastics, non ferrous metals, aluminium, steel and stainless steel. Large range from 14-152mm with hex and SDS adaptors and extra long pilot drill. Features and Benefits • High durability and extended working life • Large range from 14-152mm • Application: Holes, conduit, piping, sheet metal, channelling, trunking, lighting Specifications • Diameter: 105 mm • Arbor Part Number: P-35162 / P-35184 • Pack Quantity: 1