HSS Bi-Metal Holesaw 54 mm Dia - Suitable with Arbour (for Dia. 32 - 210 mm)The bi-metal Hole Saw fits all standard adapters on the marketBi-metal Hole Saw offers smooth cutting through various materialsTooth configuration (Vario tooth strip) is ideal for gliding through material to provide smooth cutsMade of bi-metal HSS containing 8% cobalt alloy for long-lasting cutting