This high-quality quick link is made of 316 stainless steel, ensuring strength and durability for any outdoor adventure. With a SWL of 1400 lbs, it is ideal for hiking, climbing, and outdoor sports. The round shape and 1/4" (6mm) size make it easy to use and versatile for a variety of applications. Marine Grade Corrosion resistant. 316 is the resistant to salt water and chemicals than the other stainless steels.