13-687 HELIX MORTISE BIT W/ DOWNSHEAR Marking Tools Excellent at blocking steady-state noises

Excellent at blocking steady-state noises like fans

This is because waterstones cut more aggressively

guaranteeing flatness to less than

Extra high base provides industry leading clearance from the work surface

Tension Roller are adjustable for pressure and contact

13-687 HELIX MORTISE BIT W/ DOWNSHEAR Marking Tools Excellent at blocking steady-state noises11 16"CD, 5 8"CL Product Description These Mortise heads are designed to screw down onto a Helix Mortise Arbor (Part #HMA 1 4 or #HMA 1 2) for easy transition from one cutting head to the next. The Mortise head is only available with a downshear cutter. 13 687 Spec Fractional DIA: 11 16" Decimal DIA: 0. 687" Cutting Length: 5 8" Overall Length: 7 8"