Premium 2"(50mm) Flat Dual Adjustable Side Release Buckles (2PCS, Black) Package included: Pack of 2 plastic side release buckles. Compatible with 2"(50mm) webbing and straps. Buckle inner diameter: 2 inch Made of High Quality Polypropylene, Strength and Durability. This buckle can be used for collars, belts, harnesses, backpacks, etc.