5pcs Keyhole Router Bits Set, 1/4 Inch Shank Router bits, Router Bit Set 5/16&3/8 & 1/2 &5/8 &7/16 Inch Blade Diameter

6pcs 1/4 inch shank keyhole router bit set , 5/16&3/8 & 1/2 &5/8 &7/16 inch in blade diameter.for wood hex bolt T-track slotting milling cutters set. keyhole cutter set with C2 carbide inserts, high quality alloy inserts with high finish and long service life. The Keyhole Router Bit Set features a solid hardened steel body and anti-recoil design. The blade is sharper and can be trimmed and polished for a very clean cut. 5-piece router bit set provides more variety of T-slots or keyhole slots，the router bit set is suitable for solid wood, particleboard, MDF, plywood and more.. keyhole router bits set is designed for portable and desktop woodworking engraving machine design, can not be used in electric drill, drilling machine and the like.