... German bearing 310serious :1.Taper roller bearing 2.Precision: p0,p6,p5,p4,p23.Rich stock guarantee4.Ten years industry experience ... steel 304/306Bore size25-120mmOuter diameter47-180mmPrecision GradeP0(ABEC-1), P6(ABEC-3), P5(ABEC-5), P4(ABEC-7), P2( ... Size 10mm~280mm Quality standardISO 9001:2000 standard Precision P0, P6, P5Steel pressed cageBending claw form or rivet form Delivert DateNormally ...