Feature: 1. SPECIFICATIONS: Including 20pcs electric carbon brushes, compact size, sufficient quantity for easy installation and replacement. 2. COPPER MATERIAL: These carbon brushes are made of excellent copper, with high strength, wear resistance and scratch resistance. 3. USED FOR ENGINE: Replace the old or damaged carbon brush, ensure that the engine runs well, and repair the intermittent motor. 4. MULTIPLE USAGES: The carbon brush is applicable to electric hand drill, angle grinder, hair dryer, mixer, trimming machine, etc., simple and practical. 5. COMPACT SIZE: These electric tool carbon brushes have compact size, convenient installation, space saving and wide application. Specification: Item Type: Carbon Brush Material: Copper Application: Suitable for electric hand drill, angle grinder, hair dryer, mixer, trimming machine Size: Approx. 16 x 5 x 20mm / 0.6 x 0.2 x 0.8in. Package List: 20 x Carbon Brush Note: 1. If sparks appear after the installation of new carbon brushes, please continue to run for 1‑2 minutes, and the sparks will disappear naturally after the carbon brushes are fully ground2. 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 convex3. 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