Design for CNC Milling Machine, The PCD stone engraving tool is used to engrave pictures or characters on , sandstone, marble stone, tile, , glass, and ceramic. model:B D6xL40x70 degreex0.4 Colour:Photo Color Material:Cemented carbide Package Contents: 1 * Milling cutter 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.