Product Description: Product Name: ROCK BROS Motorcycle Helmet Lock Material: Zinc Alloy+Wirerope+PVC Coating Color: Black Product Features: 1.Small and lightweight, very light and easy to carry in your pocket 2.4 digit code, easy to set, easy to open 3.Lock helmets, baby strollers, skis, suitcases and luggages conveniently. 4.The motorcycle helmet locks are worth having for more security. 5.Simple coiled structure allows long enough reach, up to the maximum of 59inch/150cm.