Package Include: Brass Wire Brush Wheel*20; Steel Wire Brush Wheel*20;Several sizes and types to suit your requirements; : widely used to remove burrs, rust, dust, remove the oxide layer, coating, can improve the quality of metal materials such as stone, an important part of themechanical processing. It's a efficient polishing tools for the metal and non-metallic materials to clean the small area's burrs and polished surface; Length:41mm/1.57inch(); Shank:3mm; Applicable machines: Brush handle diameter of 3mm, used with most rotary tools; Work Well: Remove burrs, rust, dust, removing the oxide layer. With small, good polishing effect, high efficiency, low cost. Colour:Photo Color Material:Brass+Steel Package Contents: 20 x Brass Wire Brush Wheel 20 x Steel Wire Brush Wheel Only the above package content, other products are not included. Note: Light 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.