CR Scotseal X-Treme Wheel Seal, FF Steer Axle 12,000 Lb., 4.854" Outside Diameter(4.842" Bore) X 3.500" Shaft Diameter X 0.903" Wide, Hand Install, For Tapered Spindle Using SET413 Inner & SET406 Outer Bearings Or SET427 Inner & SET428 Outer Pre-Set Bearings