6pcs HSS Chamfering Tool Bit 3 Flute 90 Degree Countersink Drill Bit for Metal

Specification: Material: High Speed Steel HSS (4241) Shank type: round Sizes: 6.3 8.3 10.4 12.4 16.5 20.5mm Package included: 6pcs Chamfer Cutter Mill Drill Set.

eBay