Smooth cutting the bi metal hole saw offers smooth cutting through various materials'. '.strtoupper('t')he tooth configuration vario tooth strip is ideal for gliding through material to provide smooth cuts'. '.strtoupper('m')ade of bi metal hss high speed steel containing 8% cobalt alloy, this hole saw has less risk of tooth breakage and higher heat resistance for long lasting cutting'. '.strtoupper('u')se this hole saw when cutting through wood, metal and plastics the bi metal hole saw fits all standard adapters on the market'. '.strtoupper('f')its threaded standard adapter'. '.strtoupper('f')eatures and benefits bull smooth cutting bull bi metal hole saw offers smooth cutting through various materials bull tooth configuration vario tooth strip is ideal for gliding through material to provide smooth cuts specifications diameter 52mm diameter 2 2 1 16 working length 38mm working length 38mm