Product This product contains 1 set of 10 tube brushes with varying diameters. The diameters for these 10 brushes are 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, 3/4, and 1 in). All brushes are 8 inches long, dishwasher safe, and constructed with stainless steel and nylon bristles.Feature Each set of 10 brushes comes with a detachable key ring for quick and easy access. All brushes have a convenient loop at the end of the handle to hang when not in use or to reattach to the key ring for safe keeping. And each end of the brush has conservatory design, which provide you more safety. Special design for gap and blind angle you could not clean well with normal tools Weight: 34 g Product Dimension: 23 x 3 x 3 cm Material: Nylon, Stainless SteelPackage Included: 10 x Nylon Tube Brushes