Made of quality sebific conduit material, strong and durable for use. This product is a flexible extension cord for electric drill and electric grinder tool. Easy to install, just clip the power connector handle to the grinder. Can be used with polishing kits, drill bits, wire brushes, burrs, mounted stones and grinding wheels. Perfect design, designed with an ergonomic handle, making it easier to hold and make your work (engraving, polishing, etc.) as comfortable as possibleHow to use the flexible shaft:1. Flexible shaft transmission, because the steel wire core of the flexible shaft rotates at high speed in the flexible shaft sleeve, the high-speed friction will cause the inner wall of the flexible shaft to heat up. ,suggestion:1) Do not use the flexible shaft drive for a long time to grind, and stop to rest every 10-15 minutes.2) Minimize the bending degree of the flexible shaft during operation. use and maintain the linear transmission as much as possible.3) Do not overload the operation, aggravating the friction of the flexible shaft to generate heat4) After using it for a while, pour engine oil on it. along the flexible shaft to lubricate and dissipate heat.2. After the flexible shaft is connected to the body of the electric grinder, please do not disassemble it normally. 105 cm in total length