These wire adopt sturdy material, withstand long term using without breaking or deforming easily. Multi-purpose and with different diameters, these cleaning can be widely applied for tubes, ports, bearings, cylinders or other narrow areas that require cleaning, very convenient and practical. Features -Color:Assorted Color -Material:Stainless steel, copper, iron -Size:10.00X1.90X1.90cm/3.93X0.75X0.75in -Size:10.00X1.70X1.70cm/3.93X0.67X0.67in -Size:10.00X1.50X1.50cm/3.93X0.59X0.59in -Size:10.00X1.20X1.20cm/3.93X0.47X0.47in -Size:10.00X1.00X1.00cm/3.93X0.39X0.39in -Size:10.00X0.80X0.80cm/3.93X0.31X0.31in -The unique twisted wire can effectively clean hard-to-reach dirt and dust. -Suitable for drill bits and impact drivers, versatile and can be used for a variety of cleaning tasks. -Small and easy to use design, is a must-have tool for any DIY enthusiast or professional worker. -The material is sturdy, which makes this wire bore brush practical and durable to use. -This set of wire brush features various sizes, you can use them to clean any types of tools. Package list: 1 x stainless steel wire bore brush(8mm) 1 x stainless steel wire bore brush(10mm) 1 x stainless steel wire bore brush(12mm) 1 x stainless steel wire bore brush(15mm) 1 x stainless steel wire bore brush(17mm) 1 x stainless steel wire bore brush(19mm) 1 wire bore brush(8mm) 1 wire bore brush(10mm) 1 wire bore brush(12mm) 1 wire bore brush(15mm) 1 wire bore brush(17mm) 1 wire bore brush(19mm)