Price is for one piece. You can add one more for an additional 200 yen, so please comment before purchasing. There are 3 in stock. Product Features/Basic Specifications Inner diameter d (Φmm): 4 Outer diameter D (Φmm): 7 Chamfer dimension r1 (mm): 0.1 Mass (g): 0.29 Material (body): SUS440C Width B1 (mm): 2.5 Allowable rotational speed (min-1 [r.p.m]): Grease lubrication 60000 RoHS Directive (compliant with 10 substances) : Compliant Basic dynamic load rating Cr (N): 255 Basic static load rating Cor (N): 107 JIS grade: 0 Shield shape: Double-sided steel plate shield type Load direction: Radial Outer ring type: Flat Raceway ring shape: Deep groove ball bearing Raceway ring row number: Single row Rolling element material: SUS440C