Hign-concerned Chemical:None Model Number:E7CA1E0388 Origin:Mainland China New Motorcycle Helmets Speed Clip Buckle Chin Strap Quick Release Buckle brand new and high quality Material: Plastic Color: Black+Red Color: Black+Red Description Dimensions: 2.44"X1.10"X0.43"(LxWxH) Feature: 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 helmet's 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 helmet's 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. Quantity: 1 PC Note: Due to the difference between different monitors, the picture may not reflect the actual colorof the item. Thank you! There might be 1-3cm errors due to manual measurement.Please allow slight error of measurement.