2.2mm Low Carbon Steel Ball AISI1010-AISI1015 China Wholesale Chrome Steel Ball with Threaded Hole Stainless Steel Balls 0.434G Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre:6.43mm 12.700mm Carbon Steel Ball and Home Application Heavy Duty Stainless Steel Ball 1.084G 8.3G Next:Bike Hub Bearing Accessory Cheap Carbon Steel Ball Solid Steel Ball 20mm Steel Ball