CMT 551-152X Bi-Metal Plus Hole Saw 6" (152mm) Reciprocating 56/14 is a single-piece

56/14 is a single-piece

Install in wet concrete

020 is a 2 diameter 2 Flute Dowel Drill (Long Series (70mm))

which in turn helps avoid post-end rot over time

Shank Length 19

CMT 551-152X Bi-Metal Plus Hole Saw 6" (152mm) Reciprocating 56/14 is a single-pieceThe CMT 551 152X is a 6" (152mm) Bi Metal Plus Hole Saw (Series 551X) with XTREME FAST Push&Lock system. The 8% Cobalt bi metal construction provides 2X longer cutting life than standard hole saws, and cuts stainless steel, steel, cast iron, aluminum, copper brass, and plastics. SPECIFICATIONS Diameter 6" (152mm) Blade Material Bi Metal (BIM) 8% Cobalt Tooth Pitch Variable 4 6 TPI (alternate and side set) System XTREME FAST Push&Lock Arbor