Polyurethane (PU) coated steel wire rope is designed for the use of gym cable machine. Robust strength of the steel core wire rope giving it a promising of lifespan whereby the 6x19 construction of wire strand extends the flexibility while engaging with multiple pulleys. Polyurethane is one of the most ideal surface coating when we talk about the abrasion resistance. Please do not use the PVC coated steel wire rope with fiber core for your gym cable machine as this type of wire rope is not suitable for high cycling usage application and easy get fatigue.