We Highly Recommend the D-Lock no-Loss bracket for all purchases of the gladhand D-Lock to retain the D-LOCK to the corresponding trailer for future uses. It is made of pure high strength aluminum as to prevent any rusting or corrosion against both the trailer body and D-Lock. Never wonder where you put your lock again. It’s always in the same place with the NO-LOSS Bracket. This is the BRACKET ONLY, D-lock and padlock sold separately.