ABC&reg; 10PC Multi-Functional Tools Brush Spray Brush ABC is a registered trademark and the only authorized seller of abcsell branded products. Material: nylon;Made of Stainless Steel and Nylon bristles - Dishwasher Safe! Sold as 1 set of 10 brushes with varying diameters on a detachable key ring Brush Diameters: 2, 3, 4, 5, 6, 8, 12, 16, 20, and 24 mm (1/16, 1/9, 1/6, 1/5, 1/4, 1/3, 1 / 2, 2/3, Common uses include: cleaning Drink Straws, Hummingbird Feeders, Airbrushes, Paint Spray Guns, Tatto