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FITS 2'' BullDog Trailer Couplers (Puck Lock Included)
Model 2178-B was designed to fit 2'' BullDog style trailer couplers. This style trailer coupler is usually found on heavy duty trailers such as those used in commercial applications and heavier weight-rated trailer applications. In most cases, Bulldog style trailer couplers will be found on commercial trailers, but in some cases trailer manufacturers offer Bulldog couplers on non-commercial trailers as an upgrade.
Designing the best coupler locks is not an easy task. We pride ourselves on producing a "glove like" fit coupler lock. Rest assured that Proven Industries trailer lock products will leave you with simply the best coupler lock on the market. Some style of safety chains you will not be able to secure inside this style of coupler lock.
Trailer coupler lock model 2178-B may not fit all trailer couplers. Please look at trailer coupler lock index pictures below, if you do not see your trailer coupler picture please fill out contact form to ensure you will get the correct trailer coupler lock. This style will allow you to secure safety chains in lock.