High quality automatic retractable electric drum | Drum automatic recovery using GB rubber cable line from the input and output of two parts: an input length is generally 1M, do not have the telescopic function. The output length is generally 3M-20M, with telescopic function and self-locking feature. Automatic retractable electric drum | Drum automatic recovery complete cable specifications, core axis by two to seven core can be within the specified range according to customer requirements: 2 * 0.75 * 1.5 1.0 2 2 * 3 * 3 * 13 * 0.75 1.5 cable 20 m 2 * 3 * 2.5 * 1.5 4 2.5 4 2.5 cable 15 meters * 3 * 2.5 + 23 * 4 10 m cable 5 * 5 * 1.0 1.0 1.5 6 * 7 * 1.0 cable 12 meters selected high-quality automatic retractable electric drum | Drum automatic recovery, of course, choose good friends Hanson cards!