YKK® Side Release Debris Removing Buckle Black is compact and lightweight, yet sturdy for a variety of bag projects and other applications. It 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 features an angular center cut that allows for smooth usage while making it easy to remove debris from the buckle. The side release structure prevents accidental opening but can be easily released with one hand.