1 Inch(25mm) POM Plastic Adjustable Side Release Buckles (2PCS, Black) Package included: 2PCS High Quality Side Release Buckles. Compatible with 1"(25mm) webbing and straps. Buckle inner diameter: 1 inch Made of High Quality Polyoxymethylene,, Strength and Durability. This buckle can be used for collars, belts, harnesses, backpacks, etc.