Making their second appearance on our list is Master Lock, with this versatile and easy to use anti-theft device. The coupler is designed to resist rust and corrosion, meaning it can hold up against the dirt, dust, and poor weather conditions that regular travel entails. The lock itself features an advanced mechanism that can’t be picked, or pryed.
Each lock comes with a set of two keys, perfect should one be displaced. Users report that the lock is tough enough to resist theft attempts even when would-be thieves use tools including hammers. The rugged appearance also acts as an additional deterrent.