Mortise Compression Spiral

Easily create through-cuts and perfect mortises and grooves in thin double-sided panels with Freud Mortise Compression Spiral Bits.

  • Creates grooves and mortises without chipping the top surface
  • Up and down shear flutes eliminate chipping on double-sided panels
  • Provides through-cuts in double-sided sheets under 5/8" thick
  • Ideal for melamine, veneer, hardwoods, softwoods, and plywoods
  • For use on CNC and automatic routers, and hand-held and table-mounted portable routers

Freud Mortise Compression Spiral Bits offer beautiful results every time.


Item # Overall Dia.(D) Carbide Height (h) Upcut Length Shank Dia. (A) Overall Length (H) More Info
77-408 1/2" 7/8" 13/64" 1/2" 3" View
77-410 1/2" 1-3/8" 13/64" 1/2" 3-1/2" View
77-508 1/2" 7/8" 13/64" 1/2" 3" View
77-510 1/2" 1-3/8" 13/64" 1/2" 3-1/2" View

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