Helmet Lock uses mechanical locking. It is needed to prevent the theft of a motorcycle helmet during stops. The design itself is a metal carabiner with a cylindrical combination lock. It can be secured at virtually any point on the motorcycle. The lock is made so that it can be fastened through metal eyelets or straps. The body is made of hardened metal, resistant to cutting and sawing. The thickness is 0.25 inches. The closing mechanism is designed for long-term use and is not affected by moisture