5 PCS 8mm HSS Countersink Drill Bit Set, Woodworking Chamfer Counter Bit, Tapered Drill Bit for Wood Drilling, with Drill Stop Ring and Hex Wrench. Drill Material: HSS. Size: 2.8 8 mm, 3.0 8 mm, 3.2 8 mm, 3.5 8 mm, 4.0 8 mm.
eBay