The YKK Flat Side Release Plastic Buckle is great for a variety of applications such as tote bags, backpacks, luggage, uniforms, sports equipment, and more. Made from acetal plastic, buckle is both smooth and durable and its side release allows for a one handed release design. The YKK Flat Side-Release Buckle is non-adjustable but can be paired with the YKK Tri-bar plasticglides to create adjustable straps.