Soft Low Carbon Steel Ball Bearing for Bicycle 1.586g Steel Ball Manufacturer Supplier 7.937mm AISI 1010 1015 Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre:6.7mm 7.937mm 8.731mm 9.525mm Low Carbon Steel Ball Best Sale for Rollers Next:Solid Carbon Steel Ball Factory Provide 6.350mm Stainless Steel Ball Bearing with Thread 8.731mm 12.7mm 19.050mm