The polishing head, good polishing effect, Within throwing uniform , polished fine and bright. Suitable for wood, nuclear carving, jade, , and other materials of fine polishing At the same time also applies to jewelry, the mold cavity, equipment, Electronic circuit boards, stainless steel decorative tube, antique bronze, Classical furniture, plastic products and high-precision parts fine polishing. Cylindrical grinding wheel: 3mm x 10mm/3mm x 12mm Each 10PCS Conical grinding wheel: 3mm x 8mm/3mm x 10mm/3mm x 12mm Each 10PCS Handle length:About 30mm material: metal Package includes 50 x Polishing head 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.