Fangrui Product Details Fangrui Product Details Fangrui Product Details Condition: Material: Plastic+metal Color: Black+red Dimensions: 2.44x1.10x0.43 Inch Professional Chin Strap Buckle For Any Helmet A Safe, Fast And Convenient Way To Securing Your Helmet Speed Clip, Quick Release Easily Install To Your Helmet Instructions: 1.fix Part A. Take One Side Of Your Helmets Strap Through The Big Hole Of Part A And Come Across The Metal Stick In The Middle,pull The Strap Out Of The Big Hole From The Bottom. 2.sew Part B. You Need To Sew D Ring Of Part B To The Other Side Of Your Helmets Strap. 3.clip The Male Connector Of Part A To The Female Connector Of Part B,you Can Release The Clip By Pull The Red Button As Arrow Showing In Part B. Package Includes: 5 X Motorcycle Helmet Plastic Pull Buckle Note: Light Shooting And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.