•Functional role: 1. 【Rustproof and Sturdy】Made of galvanized alloy brushed stainless steel, rust-resistant and corrosion-resistant, ensuring durability and reliability. 2. 【Quick Lock】Instant lock, open with one hand. With the proper spring rate design, you can easily open and close with one hand, allowing you to quickly attach keychains, cords and backpacks. 3. 【Very Smooth】The carabiner spring snap has a very smooth lock and door surface with no sharp edges on it, perfect carabiner for keychains or hammock gear. It won't rip fabric and your skin.