... type coiler cable reel 1.Using spiral as power 2.Using collector silp ring carbon brush. 3.ISO9001:2008 JT2 series cable reel ... and reliable and has many other advantages. JT2 cable reel drum components include :winding spring group,winding drum, slipring, brush rocker, ... out with mechanical force,and winding spring group will have elasticity for cable,then cables will keep tensioning condition; ...