FREE SHIPPING!!!!!!!! 1 3/4″ Dia Fiberglass Reinforced Nylon Pulley & 1/4″ Zinc Carabiner Snap Clips The pulleys are a 1 3/4 inch dia. fiberglass reinforced nylon with Heavy Duty Zinc plated steel straps. The composite wheel is very strong, will not corrode & is self-lubricating You can also attach a rope or a cord between the Zinc Snap Clip & the Pulley so that you can keep your cable runs closer to the ceiling. The pulleys help your batting cage net roll easily & quickly.