inch ball bearing 1633 1,short and guaranteed lead time 2,popular on us market 3,strong manufacturing capability inch ball ... 1633Features:1),Shield / closure: Open,Teflon Sealed,Rubber Seals,2 Metal Shield2),Tolerance codes: ABEC-1, ABEC-3, ABEC-5, ABEC-73 ... ),Vibration level codes: V4, V3, V2, V14),Internal clearance codes: C0,C2, C3, C4, C55),Material: AISI52100 ...