5Pcs Limit Countersink Drill Bit Metal Conical Bit Adjustable Countersunk .a
5 × Counterbore Drill. Good Drilling Bit Performance: The limit tapered countersunk drill bit has a reasonable structure. Texture: Steel + Tungsten Steel Alloy. Shank Length: 25mm (1-5/32in). Limit: 5-30mm.