STANDARD: diameter: 0.3mm / 0.012 inch; Shank diameter: 3.175mm / 1/8 inch; length: 2.6mm / 0.1 inch. MATERIAL: Use of ultra-fine grain carbide material with good milling and cutting performance, high work efficiency. FEATURES: High hardness, high wear resistance, high strength. Have sufficient bending strength and wear resistance. CHARACTERISTICS: , milling, hole and plate edge, clean, neat, no glitches. The longer the length of the tool clamped by the chuck, the better. APPLICATION: Can engrave PCB, CNC, Circuit boards, Metal, Plastics, Wood, SMT, Fiber glass, Carbon board. Combined with the material to be processed, select an appropriate feed rate and cutting speed to improve the tool life. Color: As shown Material: alloy size: 3.175mm Package Contents: 10* Router Bits Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.