Colour:black+silver Material:hard alloy Package Contents: 1 x 4 wood cnc router bit 1 x 3 wood cnc router bit 1 x 1/2inch to 1/4inch router collet Only the above package content other 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.