1. High hardness, high wear resistance, high strength. Have sufficient bending strength and wear resistance. 2. Use of ultra-fine grain carbide material with good milling, cutting performance, high work efficiency. 3. Can be used with 1610, 3018, 3018pro and other engraving machines. 4. Advantage: Sharp , milling, hole and plate edge, clean surface, neat, no glitches. 5. Range of processing: PCB, SMT, CNC, Mould, plastic, carbon fiber, wood, printed circuit board, other precision parts processing. Type: Engraving Bit Set colour:Silver Material:Cemented carbide Package Contents: 5 x 2 Flute Ball Nose End Mill (2.0 x 17mm) 5 x 2 Flute Straight End Mill (3.175 x 17mm) 5 x Single Flute End Mill (3.175 x 25mm) Only the above package content, other are not included. Note: Light 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.