The PTI 9pc Plumbers Holesaw Kit is designed for professional plumbers and contractors, offering a versatile selection of high-quality tools in a sturdy plastic carry case. This kit includes various Bi-Metal holesaws and arbors, ideal for cutting through a range of materials with precision and durability. Features: Bi-Metal Holesaws : Constructed from M42 steel for durability and performance. Arbors Included : Two different arbors for compatibility with a wide range of holesaw sizes. Adaptor : Converts smaller arbors to fit larger holesaws. Variable Tooth Pitch : 4/6 TPI for a smooth cutting action. Cutting Depth : 38mm for deep cuts. Contains: 6 x Bi-Metal M42 Holesaws : 22mm 29mm 35mm 38mm 44mm 51mm 1 x Arbor : 11mm (7/16) hex shank, suitable for 32 210mm holesaws 1 x Arbor : 9.5mm (3/8) hex shank, suitable for 14 30mm holesaws 1 x Adaptor : Converts smaller arbor to fit larger holesaws Specifications: Tooth Pattern : 4/6 TPI variable pitch Cutting Depth : 38mm Benefits: Versatil