Features Copper Material: Made of copper material, this brush is strong and sturdy, rust and wear resistant, comes with a long life span. For Repairing Motor: The carbon brush often gets wear due to poor engine operation, you can repair both the brushes and the motor by monitoring the brush. Wide Application: This carbon brush is widely used in electric hand drill, angle grinder, hair dryer, mixer, trimming machine, etc. 20Pcs: There are 20 pieces carbon brushes in the package that you can use them for a long time, and they are ideal for making replacements. Easy to Install: Comes with a compact size and a light weight as well, the easy installation can be quickly completed. Spec: Item Type: Carbon Brush Material: Copper Size: Approx. 6 x 13 x 17mm / 0.24 x 0.51 x 0.67in Applicable to: Electric hand drill, angle grinder, blower, mixer, trimming machine. Package List: 20 xCarbon Brush Notice: 1. If sparks appear after the installation of a new carbon brush, please continue to run for 1 to 2 minutes, and the sparks will disappear naturally after the carbon brush is fully ground. 2. The new carbon brush is worn out quickly after use, which is mostly caused by the unevenness of the commutator. Check whether the rotor is concave or convex. 3. After the new carbon brush is installed on the machine, the wire is burnt out. Please stop using it immediately and check the equipment to avoid other injuries. This situation is caused by excessive current caused by desoldering, short circuit, dust and other undesirable links. Please deal with it in a timely manner. Package List 20 x Carbon Brush