●Tip parts such as impact drivers and electric drills ●Mushroom shape allows for full use of the tip and sides ●The mushroom shape and elasticity will fit perfectly on any R-surface ●The nylon fiber is soft and soft to polish and conform to curved surfaces ●Metal Rust Remover Wood surface cleaning ●Cleaning in pipes ●Shaft Diameter: Hex 0.25 inch (6.35 mm)