Condition: Professional chin strap buckle for any helmet A safe, fast, and convenient way to secure your helmet Speed clip, quick release Easily installs to your helmet Material: Plastic Color: Black + Red Dimensions: 6 x 2.6 x 1.2 cm Instructions: Fix part A. Take one side of your helmet's strap through the big hole of part A and pass it over the metal stick in the middle. Pull the strap out of the big hole from the bottom. Sew part B. You need to sew D ring of part B to the other side of your helmet's strap. Clip the male connector of part A to the female connector of part B. You can release the clip by pulling the red button by the arrow on part B. Package Includes: 2 x Motorcycle Helmet Plastic Pull Buckle Only the above package content, other products are not included. Note: Lighting and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allows an error of +/- 1-3 cm.