StowMaster - 6,000lb weight capacity car-mounted tow bar * Stainless steel in virtually every moving component for smooth, trouble-free operation. * Autowlok locking mechanism — allows both tow bar arms to extend or retract for a quick connection.Then, as you drive away, the arms self-center and automatically lock. * Full-length safety crossbar — a full-length angle iron brace is integrated into the rear of the bar, for maximum support. * Self-lubricating nylon bushings eliminate friction between the inner and outer arms. Other tow bars use steel on steel. * Plug-welded arms — steel plugs seal both ends of the tow bar, preventing corrosion from moisture and debris. * A lustrous, high-tech powder coat finish for maximum durability. * Full-length safety strap — a built-in safety strap that will prevent the separation of the tow bar in the unlikely event the primary lock should not function. Peace of mind built right in.