8.731mm Polished Surface G100 Alloy Spheres Bearing Chrome Steel Ball 11/32" Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：6.747mm 17/64" Chrome Steel Balls for Audio Ball Cover with High Quality Next：8.3G 16.393G Factory Supply Hardness Chrome Steel Ball HRC 60-66 11.113mm 7/16" 12.700mm 19.050mm 3/4 Inch
