These plastic ladder lock buckles from Fastex are great for use with backpack straps. Made from acetal plastic, they’re a rust-resistant alternative to metal fasteners. Fit for many other fastening functions, Ladderloc buckles feature a classic, ergonomic design. Simply affix the buckle to your chosen webbing strap for easy strap adjustment. Choose from three styles below. Or shop metal webbing hardware in our hardware section.