As of the Deep Groove Ball bearing we provide: 1. Seal: open, Z, ZZ, RS, 2RS, 2. Precision: ABEC-1, ABEC-3, ABEC-5, ABEC-7 3. Vibration/Noise : V1, V2, V3, V4 /Z1,Z2,Z3,Z465 4. Internal Clearance: C0, C2, C3, C4, C5 5. Bearing material: GCr18, AISI440C, AISI304, AISI316, Ceramics 6. Cages: stainless steel, PTFE, nylon 9. Bearing ferrule and ball hardness: 59 - 63HRC We accept LC, TT and any other form of payment that can be understood on We can offer FOB Shanghai/Ningbo, CIF or DDP terms Welcome to contact us