... codes: V4, V3, V2, V1 5.Internal clearance codes: C0,C2, C3, C4, C56.Material: AISI52100, AISI440C, AISI304, AISI316, Ceramic7.Retainer: PTFE ... ...Vibration level codes: V4, V3, V2, V1Internal clearance codes: C0,C2, C3, C4, C5Material: AISI52100, AISI440C, AISI304, AISI316...Retainer: PTFE, Nylon, PEEK ...