7.938mm 5/16" G100 Ss304 316 Stainless Steel Ball for Roll on Bottle Guangzhou Decok Steel Ball Co., Ltd. Base Info Description Pre：1.588mm 2.381mm 3.175mm 4.76mm 6.35mm Solid Stainless Steel Metal Ball Next：Hot Sales 3.969mm 5/32" G1000 AISI52100 Chrome Bearing Ball
