The ECHO Quick Release has been on the market since 1987. It has proven to be a reliable, fast and convenient way to fasten and unfasten the chinstrap of a safety helmet. The product has EXCEEDED the testing standards of D.O.T. 218, Snell (M2005) and N.I.J. 0104.02.The Exclusive Patented design locks metal against metal for high strength and durability.