Made of high quality Material, it is solid, , wear resistance and long service life. This engraving pen can be used to carve jade, metal, amber, wood, glass, curio and so on. It features high concentricity and hold the grinding head firmly, fits for the grinding head with 2.35mm shank diameter. Scrub handle is anti-slip, and can be hold for long time but not tired. The switch is on the handle, which is easily to control. You can use this engraving pen to DIY multiple kinds of scriptures, and have a lot of fun. Engraving pen only, other accessories demo in the picture is not included! Powered by: 2 x AAA batteries(Not included) Rotational speed: 12000rpm Colour:Blue Material:Metal+Plastic Package Contents: 1 x Electric Micro-Engraving Pen 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.