Feature: 1. Great Bearing: Composed of shaft washer, housing washer and rolling washer, and can assembled and disassembled separately. 2. Sturdy Design: Can bear axial load but not radial load, ideal for parts that bear axial load on one side and lower speed. 3. Practical Use: Enables application on crane hook, vertical water pump, vertical centrifuge, jacks, low speed reducers, etc. 4. 10Pcs in Pack: There are 10pcs thrust ball bearing in total, which adds more convenience to the replacement of old parts. 5. Good Material: Forged with high quality beating steel material, not easy to deform, works smoothly, and also very durable. Specification: Item Type: Thrust Ball Bearing Material: Bearing Steel Model ID x OD x Thickness(Approx.) 51200 10 x 26 x 11mm / 0.39 x 1.02 x 0.43in 51201 12 x 28 x 11mm / 0.47 x 1.1 x 0.43in 51202 15 x 32 x 12mm / 0.59 x 1.26 x 0.47in 51203 17 x 35 x 12mm / 0.67 x 1.38 x 0.47in 51204 20 x 40 x 14mm / 0.79 x 1.57 x 0.55in . Package List: 10 x Shaft Washer10 x Housing Washer10 x Rolling Washer Note: Please match the appropriate size before use.