9.52/10/10.31/11/11.11/11.5/11.5/11.9/12/12.3mm Soft Carbon Steel Ball AISI1010-AISI1015 Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：Carbon Steel Ball for Bicycle 1/4" Cycle Steel Bal AISI1010-AISI1015 Next：Cheap 5/16" 7.938mm Carbon Steel Ball for Bicycle Trolley Wheel
