Review on Enhanced Keyhole Diameter T Track Slotting in New Delhi by Mark Bearden

This is a set of ¼" shank T-Slot Burrs. 3/8" and ½" sockets, 2 flute , with tungsten carbide blades. The manufacturer rates them for soft materials like chipboard, MDF or plywood but not for hardwood. They come packaged with 2 nozzles in a plastic case. I like the sharp edges of these lures. The cut out is just what I was looking for. Just be aware that these bits are designed strictly for soft materials only. And even then, they get hot so will likely snap immediately if you try to cut hardwood with them. They need to be lubricated after each use. All in They are all special drills that have been developed for easy use in soft materials.