All struts are made of structural steel, which ensures adequate strength and stiffness. Each strut is powder coated in black mat, under the varnish there is a zinc primer to prevent corrosion.Dedicated to: Honda CONCERTO Main advantages and reasons for using struts: stiffening the body better cornering recommended for sports suspension improves driving comfort prevents cracking the windshield recommended All the struts are made of structural steel, which ensures adequate strength and stiffness. Each strut is powder coated in black mat, under the paint there is a zinc primer to prevent corrosion. Dedicated to: Honda CONCERTO Main advantages and reasons for using struts: stiffening the body better handling of the car in bends recommended for sports suspension improves driving comfort prevents cracking the windshield recommended in every older car prevents the sockets from "collapsing"