ADVANTAGES OF A E-Z LOCKER Positive Gear Action: No friction plates are used. Nothing to wear out! Automatic Operation: No need to engage or disengage the E-Z Locker unit. And it automatically operates in forward or reverse. Strong And Durable: Locks tight for use in the toughest situations. E-Z Installation: Minimizes installation time and makes this unit one you can install at home with simple tools in most cases. No Special Fluids: No special lubricants or adjustments required to operate unit.