Dremel accessories (83322) silicon carbide grinding stones are designed for grinding, sanding, engraving and sharpening of various tough materials This small bullet shaped grinding stones are effective for use on hard materials such as stone, glass, ceramics, porcelain and non-ferrous metals Abrasive: This grinder is made from quality silicon carbide for more hardness and better durability Working diameter 32 mm; shank diameter 32 mm; recommended maximum speed 25,000 RPM Fits with all Dremel Multi-/Rotary tools or other 3,2mm shank size multi- / rotary toolsManufacturer: Bosch Model Number: 83322 Package Quantity: 1 Part Number: 83322 Style: Dremel 83322 - Small Point 3.2mmQuantity 3 Technical specifications Shank diameter 3,2 mm Working diameter 3,2 mm Accessory length 39,0 mm Width 4,0 mm Length 4,0 mm Height 38,0 mm Maximum RPM 25.000 1/min Packing dimensions Product box length 2 cm Product box height 10 cm Product box width 5 cm Usage information Usage period 3