AISI52100 100cr6 Gcr15 Precision Steel Ball Chrome Steel Ball of Bearing Guangzhou Decok Steel Ball Co., Ltd. Base Info Description Pre：45mm 55mm 65mm 75mm 85mm Bath Bomb Mold 304 Stainless Steel Ball Half Ball Next：Oversized Hard Steel Ball 66HRC 2.5 Inch Stainless Steel Ball for Bearings
