... -18.00.40-0.80Appications:440C Stainless steel is a type of modern steel and famous for its high corrosion resistant, wear resistance, strength ... being used in rolling element bearings, valve seats, casters, ball bearings and valve parts.420C is a martensitic stainless steel with 12% Chromium ... ,G16,G14,G12,G10Any further Information,Plz contact us! 8mm High Quality Stainless steel ball