Pro-Gear’s New Locking Differential with Wheel Hubs and Flange Bearings provides an economical drive solution for Walk Behind and Riding Mowers. Standard axle diameter is 1-inch. Special axle ends, wheel hubs and sprocket sizes are available upon request. For a complete drive system, Pro-Gear’s Locking Differentials can be utilized with our T7000 Series Transmissions. Contact factory for product specifications and mounting drawings.