Secure the king pin of semi-trailers, RVs and other fifth wheel trailers with grand general's steel king pin lock with caution tag. This king pin lock with 2 keys covers the entire king pin, prohibiting fifth wheel from connecting to king pin. Trucking companies and professional drivers often use it to prevent theft. The king pin lock only takes seconds to install and provides you with peace of mind. It is a smart choice to safeguard your trailer. Protect your trailer and investment with grand general's steel king pin lock.