CMT 316.080.12 Countersink for 4 Flute Drills D=5/16" LH Framing Angles and Plates the bottom of the base

the bottom of the base plate sits flush with the concrete surface

Adjustable Groove Width Shims allow fine-tuning of groove width from 1/4 inch to 13/16 inch

This design also meets code requirements for structural posts installed in basements or in areas exposed to weather or water splash

Diameter 5-3/8" (136mm)

CMT 316.080.12 Countersink for 4 Flute Drills D=5/16" LH Framing Angles and Plates the bottom of the baseThe CMT 316. 080 is a (Countersink (57. 5mm)). Dowel drill with integrated countersink for drilling and countersinking in one pass. 4 flute version for higher feed rates. Rotation: Left hand (LH). SPECIFICATIONS Diameter (D) 18mm Bore Diameter (F) 8mm Total Length (L) 15mm Cutting Angle (A) 45 degrees Number of Teeth 2 Product Type 2 Flute Dowel Drill with Countersink Series Countersink (57. 5mm) Nominal Diameter Cutting Length Overall Length 57. 5mm