I remember buying this when I was repairing my motorcycle, but I forgot when I bought it... The item in the photo is a "Twist Brush" from the RELIEF brand. • This brush is for polishing the inside of holes (bolt holes and the inside of pipes) and removing rust and debris. • It's specifically labeled for "iron, non-ferrous metals, and stainless steel," so it's used for metalworking and maintenance. • The one in the photo is a "hard steel wire (wire brush)" type, suitable for strong polishing and rust removal. Package information: • Part number: 33205 • Brush diameter: 10mm • Effective length: 60mm • Hex shank 6.35mm (can be attached to an impact driver or electric drill) Please note that it is for clockwise rotation only.