Use for cleaning firearms, engine parts, and all kinds of hard to reach areas around the home, garage, or workshop. Double injected contoured grip handle provides a secure hold. Quick change 1/4 in. shanks and power tool extension for use with electric drills. Includes: 1 pc 6 in. power tool adapter, 1 pc quick change driver handle, 6 pc nylon brushes, 6 pc steel brushes, and 6 pc brass brushes. Sizes: 1/4 in., 3/8 in., 1/2 in., 5/8 in., 3/4 in., 1 in..