HSS Titanium Countersink Drill Bit Set Chamfer 1/4"Hex Taper Hole Cutter Wood Metal Countersunk Bit Deburring Chamfering Tool

[Features]: 1. These flute countersink drill bit set are machined from high speed steels. 2. 82° or 90° angle on the point for sharp and precise countersinking. 5 flute designed with staggered cutting teeth aranged to insure free chip flow and rapid chatter free cutting. 3. 1/4″ hex shank countersinks are fine for a quick drill. They don't slip in drill chucks. 4. You can make deep countersinks easily by setting the countersink's depth stop to allow the countersink to drill more deeply into the worksurface. [Special Note]: Typle A-B-C is 90 degree, the material is HSS 4241, suitable for soft metal, wood board, plastic, etc.. Typle D-E-F taper is 82 degree, material is HSS 4341, more durable than 4241, suitable for thin iron plate, soft metal, wood board, plastic, etc..