... 3/16"1/4"5/16" Bicycle steel ball is one of the main products of our factory ... and win the high valuation successively. Bicycle Steel Ball Information Products namecarbon steel ballsBrand nameZRGQSeries 1/4, 1 ... 3/16, 5/16, 5/32, 3/8 ,7/8, 3/4 and so on.ID size0.5mm-50mmCage ... ball, chrome steel ball, stainless steel ball, complete product specifications, can provide you with accuracy of 10 -1 000 level ...