Condition: Professional chin strap buckle for any helmet A safe, fast, and convenient way to secure your helmet Speed clip with quick release mechanism Easy to install on your helmet Material: Plastic Color: Black + Red Dimensions: 6 x 2.6 x 1.2 cm Instructions: Attach part A. Thread one side of your helmet strap through the large hole of part A and over the metal bar in the center, then pull the strap out from the bottom of the large hole. Sew part B. Sew the D-ring of part B onto the other side of your helmet strap. Connect the male connector of part A to the female connector of part B. To release, press the red button as indicated on part B. Package includes: 2 x Motorcycle helmet plastic pull buckles Note: Light and display differences may cause slight color variation between the image and the actual item. Measurement error allowed is +/- 1-3 cm.