CMT 550-079X Multi-Purpose TCT Hole Saw 3-1/8" (79mm) Drill Bits 140 is a 14 diameter

140 is a 14 diameter 4 Flute Dowel Drill (Long Series (70mm))

Cutting aluminum

01 is a drill adapter for Biesse boring machines with quick drill change chuck

and chipboard on metric-arbor machines and track saws

CMT 550-079X Multi-Purpose TCT Hole Saw 3-1/8" (79mm) Drill Bits 140 is a 14 diameterThe CMT 550 079X is a 3 1 8" (79mm) Multi Purpose TCT Hole Saw (Series 550X) with XTREME FAST Push&Lock system. The carbide tipped construction cuts wood, plywood, MDF, laminates, plasterboard, plastics, bricks, aerated concrete, and soft tiles 5X faster than standard hole saws. Compatible with all CMT 550 551 arbors via the Push&Lock quick change system. SPECIFICATIONS Diameter 3 1 8" (79mm) Cutting Depth 4 inches Blade Material Carbide Tipped (TCT)