September 2012 - The RHR-4000 Dok-Lok adds an additional layer of safety for handling overseas shipping containers on loading docks. The vehicle restraint has a hook design that provides a large wrap over rear impact guards, preventing trailer-separation accidents. The RHR-4000 also features a water- and dust-resistant IP66-rated motor and a longer-lasting, corrosive-resistant finish that meets the ASTM B117 testing standard.




