Atwood (75030 Bevel Gear/Bearing Kit STANDARD DUTY MITER GEARS - With Thrust Bearings, Washers, plate, pins, and bushings. TALLER 15 TOOTH GEAR DIMENSIONS - 1.350" diameter x 0.700" H, 0.500" center hole. SHORTER 15 TOOTH GEAR DIMENTIONS -1.350" diameter x 0.630" H, 0.500" center hole.