Specification : Material : Cemented carbide Shank Diameter : 3.175 mm cut Edge Diameter : 0.8-3.0 mm -LRB- 0.8,1.0,1.2,1.4,1.6,1.8,2.0,2.2,2.4,3.0 mm -RRB- cut Edge Length : 12 mm boilersuit Length : 37 mm Quantity : 1set -LRB- 10pcs -RRB- Guaranty : Within 90 days product tone is not completely, please CONTACT US, 100 % refund. Features : use of ultra-fine grain carbide material with operative milling, cutting performance, elation work efficiency ; have spare bending strength and wear resistance ; elation hardness, elation wear resistance, elation strength ; penetrating cutting edge, milling, hole and plate edge, surface divest, swell, no glitches. Application : PCB, SMT, CNC, Mould, impressionable fiber, carbon fiber, large grueling wood, circuit board, past precision parts processing. Package : 10pcs PCB Drill Bit Engraving Mill Cutter .