Features: The upgraded helmets Quick Release Buckle features metal and plastic construction with 50% enhanced tensile strength, ensuring reliable safety for motorcycle helmets during high speed rides and extreme conditions. Engineered with a five segment M type clasp and stainless steel components, this buckle offers precise adjustment through its stage locking mechanism and quick release function for instantly helmets removal. Designed for motorcycle riders, motorsport competitors, and urban commuters requiring secure yet accessible helmets attachments during emergency situations or long distance journeys. Ideal for road racing, road adventures, and daily motorcycle use, this buckle maintains stability across vibration intensive environment. Easy to install, features speed clip, quick release performances. Specifications: Material: POM,Metal Size:Approx.67mm/2.64''x26mm/1.02'' Quantity:1,2,4 Package Includes: 1/2/4Pcs Helmets Buckle note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.