Spring type cable reel series JT is a kind of automatic cable reel driven by the spiral spring, which adopts the imported international universal technology of spiral power spring exploiting energy by itself, featuring simple power-supply, safety and reliability in operation and correct stress on the cable. There are many kinds of products available for the customers: slip ring built-in type with compact and pretty contour; slip ring exterior installed type in convenience of service; overhanging type which can coil up much longer cables; single arm type with smaller contour and volumn.