WHAT IN PACK: 3inch Wheel*1, 2.5inch Wheel*1, 2inch Wheel*1, 1.5inch Wheel*1, 2.5inch Cup*1, 2inch Cup*1, 1inch Pen*3 WIDE APPLICATIONS: This brush set consists of pen type, cup type and wheel type brushes. It can be applied to clean rust, strip paint, debur edge, polish surfaces and so on. Different sizes and types of brushes enable to work on various of conditions such as some small and tight spaces, cornors. It works greatly for both metals and wood. SPECIFICATIONS: 0.012inch strengthen carbon steel wires, Max speed 4500 RPM, 1/4inch Hex shank PERFECT FOR DRILL: The 1/4inch Hex Shank is perfect for all kinds of drills STABILITY AND DURABILITY: All types of brushes in this set are coated with harden steel plates to hold the bristles better. In addition to this design, the bristles also engage a reasonable bending to increase the smoothness and flexibility during the process. Colour:silver Material:Metal Package Contents: 1 set x wire brush for drill 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.