Made from durable steel material for heavy-duty and longer use Has high rust and corrosion resistance Widely used in home and office appliance, communication equipment, ship assembly and other machinery industry Ideal for use in confined areas where the head needs to be flush or below the surface Great choice for your general trade requirements and DIY work, allowing for fast easy tightening and securing of wood, metal, rigging, pipes, when needed They are also great for replacing old, rusty or broken screws