5.556mm 6.350mm 7.937mm 8.731mm Drilled Stainless Steel Hollow Ball for Corrosion Resistance, Magnetism Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：Jinnai Brand Guide Bush and Guide Pillar, Copper Ball Bearing Cage, Bronze Stainless Steel Ball Bearing Bush Next：Precision G10 Chrome Suj2 Bearing Steel Ball
