No compromise. Clementi Screws are made of low-carbon 316L stainless steel, which has corrosion resistant level surpass ordinary 304 or 8-18 stainless steel. It is suitable for both indoor and outdoor use and does not require any maintenance. Torx drive system prevents cam-out and is most suitable for torque limiting automatic drivers. Pan head has a flat bottom that makes it sit on top of the surface. Our high quality screw make your work hassle-free and you can focus on your work quality.