HSS Bi-metal Hole Saw With Built-in Arbor HSS Bi-metal Hole Saw With Built-in Arbor 1. M3/M42 High Speed Bi-metal ... Cutting;2. 4/6 TPI variable Tooth;3. Cutting Safely and Efficiently,the Best Way to Cut Large Holes, Clearing the ... Materials Pipe,Nail-Embedded wood, Hard Wood Floors, Plywood and Plastics;6. All the specifications for arbored hole saws are ...