Our bristles on both sides of the brush are made of nylon bristles and steel wire bristles. You will get 3 pieces of golf cleaning tools, including 1 double-sided cleaning brush, 1 flat sharpener, and 1 6-head sharpener to effectively clean your golf tools, which can effectively remove stubborn dirt in the groove, and can also be used to clean golf shoes. This set of tools can effectively remove sand and dirt in the trench.