Bearing Race and Seal Driver Kit The Bearing Race and Seal Driver Kit provides a convenient way to smoothly and quickly position a bearing in the inner hole of an axle. The kit includes a handle grip and six heavy-duty bearing drivers. The drivers have different diameters in order to match different-sized bearings, and three of the drivers are formed with two different diameters. Bearing Driver Sizes: . 1.555 (39.5 mm). 1.752 (44.5 mm). 1.968 (50.0 mm) . 2.322 (59.0 mm). 2.48 (63.0 mm). 2.559 (65.0 mm) . 2.834 (72.0 mm). 2.992 (76.0 mm). 3.189 (81.0 mm) 4408