Material: These D-shaped locking buckles are made of 304 stainless steel, strong, durable, rust-proof and corrosion-resistant. Size: 50 x 24 mm. Working load limit: 120 kg, thickness 6 mm. Package including: 6 x M5 quick release carabiner. Turn the wire clockwise to open and counterclockwise to close. Premium quality quick links for chains/cables, cable connections; Threaded nut closure for added security. Widely applications: Suitable for hiking, camping, key chains, backpacks, tents, dog leashes, DIY accessories, outdoor activities, equipment hardware and so on.