Amana Tool 45542 Carbide Tipped Up-Shear Bit Slot Mortiser 5/8 D x 1 Inch CH x 1/2 SHK Router Bit

These bits are designed to do deep slot and holes for tenon, especially in doors, chairs, tables etc. Special carbide with a 1" long up-shear and chip breaker for fast cuts and chip clearance.  For use in lock mortising machines and door machines.  WARNING!: Do not use these bits on a drill press machine under any circumstances!