THE METRIC ASSORTMENT CONTAINS THE MOST POPULAR SIZES OF HEX BOLTS IN METRIC SIZES. THIS ASSORTMENT COVERS DIAMETERS FROM M 4 THRU M8. ALSO INCLUDES HEX AND LOCK NUTS. MADE FROM A2 (304) STAINLESS STEEL, THEY OFFER SUPERIOR CORROSION RESISTENCE. CONTACT OUR SALES DEPARTMENT FOR ADDITIONAL INFORMATION.