Various Shapes And Sizes To Fit Different Needs - This sanding bits comes in three different shapes and sizes, all with a 1/8 inch shank to fit standard rotary tools. Such as curved, flat and slotted surfaces. Ideal for sanding after beveling holes in metal and wood. More - Made with Metal oxide, A high-quality industrial abrasive made for extended use, making this bits tough enough to smooth out most materials including stainless steel. It has plenty of shank for the collet or chuck to hold onto for proper attaching. And, this , grinding stone can be cleaned and restored to its original shape after extended use, longer tool life and more efficient grinding. Wide Compatibility - Features a 1/8 inch shank, making the grinding stone suitable for most for rotary tool, and other electric drills, cordless drills, die grinders. Multipurpose To Have In Your Toolbox - It's always useful to have a variety of grinding stones in your toolbox. These sanding bits for rotary tool are great for general grinding, such as sharpening, deburring, and removing rust from plastics, metal, and even dog nails. Package Included - The package includes 45 pieces of grinding stone sanding drill bits. You receive 15 pcs of 10mm -shaped, 15 pcs of 10mm cylinder-shaped and 15 pcs 15mm cylinder-shaped sanding bits. Colour:As Shown Material:Metal Package Contents: 45 * drill 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.