The Reelcraft Hand Crank Static Discharge Reel, No. GHC3100 N, conveniently retracts and stores up to 100' of high-visability orange nylon jacketed cable. When properly clamped to a ground, the static discharge reel dissipates static electrical build-up, reducing the chances of sparking and the potential for explosion. This unit should be used for applications where explosions can occur as a result of static build-up, such as re-fueling/de-fueling.