1.Material: AISI1010/1015/1045 carbon steel 2.Grade: G1000 3.Hardness:58 to 62 Products namecarbon steel ballsBrand nameZJTSeries 1/4, 1/8, 3/16, 5/16, 5/32, 3/8 and so on.ID size1--12.7mmCage materialAISI-1010-1015 1045 GradeG1000 G2000Color White,BlackQuality standardInternational standardServiceOEM & ODM serviceDelivery dateNormally ready goods and stock within 5-20dayPayment termsA:100% TTB: ...