1Made of A2 stainless steel material, the A2 stainless steel material provides strength and offers good corrosion resistance in many environments 2Ideal for use in confined areas where the head needs to be flush or below the surface 3Fixing component, industrial and construction fasteners 4Eight common sizes and three optional types for general purpose use 5Used widely in the home and office appliance, communication equipments, ship assembly and other machinery industry