Feature: 1. COPPER MATERIAL: Carbon brushes are made of copper, resistant to wear and tear, strong and durable, ideal for replacing your old or worn out parts. 2. EASY INSTALLATION: Carbon brushes are compact, simple, do not take up installation space and are easy to install quickly. 3. SUFFICIENT QUANTITY: There are 20PCS carbon brushes in the set, which can maintain your power tool's engine for a long time and long life. 4. IDEAL REPLACEMENT: Worn carbon brushes are usually the cause of poor engine operation, and the user can repair intermittent motors by replacing the brushes. 5. WIDE APPLICATION: This carbon brush is suitable for rhinestones, hand drills, angle grinders, blowers, mixers, trimmers and more. Specification: Item Type: Motor Carbon Brush Material: Copper Applicable to: Hand drill, angle grinder, hair dryer, mixer, trimmer Size: Approx. 16 x 6 x 20mm / 0.6 x 0.2 x 0.8in. Package List: 20 x Motor Carbon Brush Note: 1. If there is a spark after the installation of the new carbon brush, please continue to run 1‑2 minutes, the spark will disappear naturally after the carbon brush is fully ground2. The new carbon brush will be worn out soon after use, which is mostly caused by uneven commutator, check whether the rotor is bumpy3. New carbon brush on the machine after the wire burned, please immediately stop using and check the equipment to avoid other injuries, the situation more desoldering, short circuit, dust and other bad links caused by the overcurrent, please deal with it in time