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): 3 Outer diameter D (Φmm): 10 Chamfer dimension r1 (mm): 0.15 Mass (g): 1.66 Material (Body): SUS440C Width B1 (mm): 4 Allowable rotational speed (min-1 [r.p.m]): Grease lubrication 50000 RoHS Directive (10 substances compliant): Yes Basic dynamic load rating Cr (N): 630 Basic static load rating Cor (N): 218 JIS grade: 0 Shield shape: Double-sided steel plate shield type Load direction: Radial Outer ring type: Flat Raceway shape: Deep groove ball bearing Raceway row number: Single row Rolling element material: SUS440C