Features: Brand new and Crafted with industrial aluminum oxide abrasives, the sanding bit offer sufficient hardness and wear-resistance for efficient grinding, thereby extending its lifespans. Great for grinding polishing welded parts, rough edges, rust, metal surfaces with low noise and less dust. They can work in either drills or rotary tools. Designed in a cylindrical 3 different shapes, sanding bit for drill are suitable for sanding narrow or irregular space. 10 15mm cylinder shape, 10mm shape(20 Pcs each size) 1 8" Shank are designed to fit either drills or rotary tools perfectly. The metal grinding bit allow for quick change outs, ensuring workflows. Sharpen lawnmower blades, screwdriver tip, scissors, and more. Suitable for polishing and grinding welding joints from metal castings and removing rust. The Sanding Drum can also adapt to any kind of drill. For your safty, please wear protective glasses and gloves while working. Specifications: Materials: Corundum Sand Metal. Shank diameter:3mm( 1 8inch). 3 Differernt Size: 10mm cylinder shape, 15mm cylinder shape, 10mm shape. Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 120Pcs Sanding Bit? 1 8" Shank are designed to fit either drills or rotary tools perfectly. The metal grinding bit allow for quick change outs, ensuring workflows. ? Designed in a cylindrical 3 different shapes, sanding bit for drill are suitable for sanding narrow or irregular space. 10 15mm cylinder shape, 10mm shape(20 Pcs each size). ? Great for grinding polishing welded parts, rough edges, rust, metal surfaces with low noise and less dust. They can work in either drills or rotary tools. ? Crafted with industrial aluminum oxide abrasives, the sanding bit offer sufficient hardness and wear-resistance for efficient grinding, thereby extending its lifespans. ? Brand new and.