DescriptionThe package comes with 50pcs cylinder shaped grinding heads and 50pcs tapered shaped in different sizes of heads. It designed with mandrel mounted metal shank, ceramic abrasive head and will make polished goods clean and bright, best used for various mould, metal, wood, jade,agate, etc. Fit most normal rotary tools for sanding, grinding, polishing, sharpening, deburring.Features- Color: Shown in the pictures. - Material: Ceramic and Metal. - Head Shape: Cylinder, Tapered. - Package Size: Approx. 11.5 x 11.5 x 6.2cm/ 4.5 x 4.5 x 2.4 inch (LxWxH). - Designed with mandrel mounted metal shank, ceramic abrasive head.- With 50pcs cylinder shaped grinding heads, 50pcs Tapered shaped, different sizes of heads.- Make polished goods clean and bright, best used for various mould, metal, wood, jade,agate, etc.- Fits most normal rotary tools for sanding, grinding, polishing, sharpening, deburring.- Can be used with electric drills, electric grinders or other rotary tools.