Quantity: 6pcs/box(20/25/35/50mm Drill Bits+20mm Finger Bit+50mm Chamfer Bit) Connection: M14 Thread Package: Suitcase Box Specificiation: ·Drill Core Bits:Diameter 20/25/35/50mm,Total length 60mm,Diamond height 10mm,Grit #35/40; ·Finger Bits:Diameter 20mm,Work length 50mm,Total length 65mm,Grit #50/60; ·Chamfer Bits:Diameter 50mm;Work Length 46mm,Total Length 55mm,Grit #80,Top Angle 60°; ·Box Size: 24x17x8.5cm Feature: 1.Drilling+Milling,different sizes satisfy all needs,complete all jobs. 2.Fine Diamond Coated,less chipping,improve finish quality. 3.Vacuum brazed technology allows longer working life. 4.Dry or wet use.