3inch (75 mm) Wheel*3pc, 2-1/2inch (63mm) Wheel*3pc, 2inch (50mm) Wheel*3pc, 1.57inch (40mm) Wheel*6pc, 2inch (50mm) Cup*3pc and 1.57inch (40mm) Pen*1pc. They're well-made and the range of sizes comes in handy.steel brush for drill uses 0.012 Inch carbon steel crimped wire and excellent fixing that hold fast and do not bend easily which are made of a better grade of steel. Either way it has made them durable as can be.Wire brush drill attachments can be used for quick surface adhering treatment before spray coating and electroplating. The drill wire brush set also does well in removal, such as removing rust, paint, burrs, and corrosion from wide flat surfaces, small areas, corners, wheel hub and screw.wire brush attachment for drill is rigidly secured by a plate-shaped or cup-shaped thickened metal holder to a better safety and stability. The sturdy 1/4inch hex does not wear out or break easily and fits most types of drill bits and mold grinding machines.Colour:silverMaterial:Alloy Steel + MetalPackage Contents:1 set x arbor accessoriesOnly 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.