Retrax RetraxONE MX - 07-13 Silverado/Sierra 5'9" w/o Stake Pocket - Standard Rail Model 60421 Underseat This type of coupler does

This type of coupler does not bolt onto a trailer's frame the same way that a standard coupler does

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Push in the carpeted part to fit the DÜHA box correctly

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Retrax RetraxONE MX - 07-13 Silverado/Sierra 5'9" w/o Stake Pocket - Standard Rail Model 60421 Underseat This type of coupler doesRetrax RetraxONE MX 07 13 Silverado Sierra 5'9" w o Stake Pocket Standard Rail Model 60421 The RetraxONE MX combines strong, durable polycarbonate with a powerful and incredible scratch resistant matte finish. The RetraxONE MX features a low profile patented design that streamlines the overall appearance and provides a firm seal. The RetraxONE MX can be locked in any position along the rail and its secured with its own keys. The RetraxONE MX is