Skin Packed With Washer & Axle Nut. Bearing Sizes: Stock Diameter: 1.26"; Seal Diameter: 1.23"; Inner Bearing Diameter: .999" (44643); Outer Bearing Diameter: .999" (44643); Threads: 1"-14 UNS; Overall Length: 8.50"; Distance to Centerline of Cotter Pin: 3.88".