The Makita Performance HSS Bi-Metal Hole Saw in 52mm diameter is a versatile size for lighting cut-outs, conduit, and piping work, performing consistently across metal, board, and plastic. Features and Benefits: • HSS Bi-Metal with 5% cobalt for durability and extended life • Variable pitch 4 TPI tooth for smooth cutting • Suitable for wood, gypsum board, plastics, non-ferrous metals, aluminium, steel and stainless steel • Compatible with hex and SDS adaptors Specifications: Diameter: 52mm Arbor Part Number: P-35162 / P-35184 Pack Quantity: 1