I purchased this from Repmart. Outer dimensions (height x width): approximately 9 x 6 cm Inner dimensions (height x width): approximately 6.5 x 3.5 cm Gate opening width: approximately 1.5 cm Weight: approximately 20g Material: GhillieTEX high-strength resin This is a Tac Link, a resin military carabiner made by ITW NEXUS. It uses GhillieTEX (acetal resin) and is made with high-strength polymer molding that can withstand temperatures of 90°C or higher, resulting in a robust construction. The spring in the opening is made of highly corrosion-resistant stainless steel, allowing the gate to be opened and closed with light force, and making it easy to attach and detach from equipment. The body, which features the company's logo, has a bumpy, non-slip texture for easy use even with gloved hands.