Feature1.40Pcs Abrasive Buffing Wheel Set Made of superior quality fiber and abrasive ores, including 10pcs Brown 180Grit, 10pcs Green 240Grit, 10pcs Red 320Grit, 10pcs Black 400Grit.2.Superior Buffing Performance ELASTIC GRINDING, effectively prevent excessive cutting and scratching workpiece surface; As the fibers wear out, new abrasive ore sands are constantly formed naturally, this SELF-SHARPENING action provides consistent processing quality for the workpiece.3.Dimenions - Shanks are 1/8 inch (3mm), Abrasive Wheel Buffing are 1" in diameter, 25mm Mix Grit Abrasive Buffing Polishing Wheels.Constructed of non-woven nylon fibers infused with aluminum oxide grit. Leaves a fine satin finish on metals.4.Buff wheels enable you to achieve a smooth, uniform finish and conformability to irregular surfaces with minimal smearing. Great for all types of detail work in both hard and delicate materials.5.Wide Applicstion - Suitable for metal surface cleaning, grinding, dusting, deburring, polishing, stripping residue, removing oxide, Meanwhile these are great for polishing jewelry or other metal working uses. they can be used with a dremel tool, fit for rotay tools grinder etc.size:Shank diameter: 3 mm/ 1/8 inchBrush diameter: 25 mm/ 1 inchLength: 46 mm/ 1.8 inchQuantity: 40 pieces, each grit 10pcs.