YKK® Side Release Light Weight Buckle Black is a sturdy yet slim buckle for a variety of bag projects and other applications. This buckle is made from high-grade polyacetal (POM), a strong plastic that bridges the gap between metals and ordinary plastics in stiffness, hardness, stability and toughness. This buckle is designed with a V shape that makes it easy to snap the two pieces together. The side release structure prevents accidental opening but can be easily released with one hand.