1. High hardness, high wear , high strength. Have sufficient bending strength and wear .2. Use of ultra- 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 cutting edge, milling, hole and plate edge, clean surface, neat, no glitches.5. Range of processing: PCB, , CNC, Mould, plastic, carbon fiber, wood, printed circuit board, other precision parts processing.Type: Engraving Bit Setcolour:SilverMaterial:Cemented carbidePackage Contents:5 x 2 Flute Ball Nose End Mill (20 x 17mm)5 x 2 Flute Straight End Mill (3175 x 17mm)5 x Single Flute End Mill (3175 x 25mm)Only the above package content, other products 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.