13-687 HELIX MORTISE BIT W/ DOWNSHEAR Marking Tools Tension Roller are adjustable for

Tension Roller are adjustable for pressure and contact

Top read window for easy reading from above

Extra high base provides industry leading clearance from the work surface

This is because waterstones cut more aggressively

13-687 HELIX MORTISE BIT W/ DOWNSHEAR Marking Tools Tension Roller are adjustable for11 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"