Dual-Side Adjustable 1/2″ & 5/8″ Plastic Buckles – Quick-Release Heavy-Duty Set por | ago 9, 2026Dual-Side Adjustable Plastic Buckles. ✅Strong and Durable: Constructed from high-grade plastic, these buckles have passed a 3000 tensile and can withstand a pulling force of 44 lbs (20 kg) without compromising on hold.