CMT 376.101.12 Dowel Drill w/Countersink 10x15x57mm S=10x25mm LH E-Z Spikes/Menders/Bases The 4/6 TPI designation indicates

The 4/6 TPI designation indicates a variable tooth pitch - the blade alternates between 4 teeth per inch and 6 teeth per inch along its length

Why does this post base include a 1-inch standoff

standoff design keeps the base of the post elevated above the concrete surface

Orange Chrome Coating Chromium coating protects against corrosion and increases surface hardness for extended blade life

Machines: Radial arm saws

CMT 376.101.12 Dowel Drill w/Countersink 10x15x57mm S=10x25mm LH E-Z Spikes/Menders/Bases The 4/6 TPI designation indicatesThe CMT 376. 101 is a 10 diameter 2 Flute Dowel Drill with Countersink (With Countersink (57. 5mm)). Dowel drill with countersink for drilling and countersinking in one pass on boring machine. The countersink creates a clean recess for bolt heads or connectors. Rotation: Left hand (LH). SPECIFICATIONS Product Type 2 Flute Dowel Drill with Countersink Series With Countersink (57. 5mm) Nominal Diameter 10 Cutting Length 15mm Overall Length 57mm Shank