Helix Mortise Bit w/ Downshear Laminate Just replace the arbor instead

Just replace the arbor instead of the whole bit

Ball bearing guides control the cutting depth and also allow use on rounded

straight bit with 7/8" cutting diameter

precise cuts for high-efficiency woodworking projects

and 3/4" large diameter for use with 1/2" collets

Helix Mortise Bit w/ Downshear Laminate Just replace the arbor insteadMaterials: Natural woods, composite woods, hard plastics Recommended RPM: 12,000 14,000 (max 24,000) 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. TOOL SPECS: Carbide tipped, screw type helix mortise bit with 3 4" cutting diameter, 5 8" cutting length, 1 4" 28 threads, and 7 8"