... processing of wire to high-level precision steel ball.MAIN PRODUCTS:1. Stainless steel ball, with material AISI304, 316, 420C, 440C2. ... are widely used in several industries, such as hardware, sliders, ball bearing lead screw, wheels, toys, bicycles, bearings, trust bearings ... 30 days or confirmed while placing order Italian Zinc Plated 25.4mm Steel ball made by professional manufacturer