Exceptional Material: This wire brush set is made of high-quality plastic, brass, and stainless steel. The steel brush is corrosion-resistant, ensuring maximum durability. The brass brush is sturdy and durable for long-term use. Ergonomic Handle: This stainless steel wire brush set features an ergonomic handle with a thick, smooth edge that won't cut your hands, providing a comfortable grip. The slightly curved brush design allows for easy cleaning of paint and rust from metal. Wide Applications: Our drill brush can be used on rust-resistant and anti-corrosion paints on metal. The grinder brush is suitable for cleaning spark plugs, light metal engines, and batteries. The nylon brush is designed for cleaning lawnmowers as well as plastic and upholstered vertical blinds. What You Get: You will receive three 7-inch drill brushes and three 9-inch wire brushes, enough for your daily use. These drill cleaning brushes have 3 types of bristles (steel wire, copper wire, nylon), which are durable and suitable for many uses.