The WARN 74995 Winch Motor Coupler Kit offers like new confidence when buying this replacement kit. This Ergonomic design delivers with full durability and a seamless winch motor to drive shaft connection. It is specifically designed coupler for the following WARN ATV winches and WARN hoists: ProVantage 2500 and 3500, RT/XT 25 and 30, as well as, the DC800 Hoist (12 and 24 volt). The diameter of the coupler measures at 1.9in or 4cm. This exceptional piece provides exactly what the original did and fits like a glove.