MATERIAL: The bristles of the black and white brush heads are made of steel wire and nylon respectively. HIGH VERSATILITY: Iron saber saw interface, suitable for most types of saber saws and reciprocating saws on the market. SAVING TIME AND EFFORT: The steel cleaning blade can better clean the cement floor, rust and other cleaning matters, . TOUGH CLEANING POWER: Won't scratch surfaces. Gets rid of stubborn layers of grime. USAGE: Suitable for grinding and removing tools from light to heavy stains, oil stains and rust. Use on grout, carpet, tile. Size Chart: Blade 50x140mm/1.97x5.51inch, 10x140mm/0.39x5.51inch Brush: 98x185mm/3.86x7.28inch Package Includes: Optional Package: 1PCS Nylon Brush Or 1PCS Steel Brush Or 2Pcs Set Includes: Nylon Brush and Steel Brush Or 4pcs Set Includes: Nylon Brush, Steel Brush, Blade and Shovel Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!