MALAYAS 6pcs 90 Degree 3 Flute 6.3 20.5mm HSS Countersink Drill Bit Titanium Coated Chamfer Cutter End Mill Cutting Tool Set

The set of 6 3-flute 90 degrees countersink drill bits is suitable for processing metal and some non-metallic materials, such as carbon steel, steel, thin iron plate, insulation board, PVC board, aluminum, soft and hard wood, plastic and so on. The countersink drill bits set with titanium coating are very sharp, with a high circular machining accuracy and durability. The high-quality countersink drill bits can remove burrs well without leaving scratches. The drill bits of standard sizes are compatible with all kinds of common drill and drilling machine, including vertical drilling machine. Specifications: diameter of the countersink top: 20.5mm,16.5mm,12.4mm,10.4mm,8.3mm,6.3mm; diameter of the bottom:10mm,10mm,8mm,6mm,6mm,5mm; length overall: 47mm,47mm,46mm,39mm,40mm,37mm; Material-high speed steel 4241, Manufacturer: MALAYAS