This special soft microfiber wand eliminate the back splash that other nylon bristles may give you. With this soft microfiber yarn wheel woolie, you will not have to worry about scratching the rims. The size of this wheel wand is 12 inches, and a 1" diameter microfiber yarn clean hard to reach area and behind the wheel to wash out stubborn brake dust without scratching. This is a great tool for any car enthusiast or detailer, and it is at an affordable price. Car maintenance and routine washes doesn't mean you have to overspend. Check out Golden State's constant evolving car care product line for more new products, like this one!