38.1mm Drilled Stainless Steel Hollow Ball for Magnetic Devices, Floating Devices, Calibration Instruments Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：Stainless Steel Balls Threaded Tapped Stainless Steel Ball 2.381mm 3.175mm 4.762mm 5.556mm 6.762mm Next：46mm Wide Roller Linear Guide Rail Isgb15uu-3
