https://www.etrailer.com/Blaylock-Industries/BLTL-50-40D.html
Today we'll be reviewing the blaylock EZ lock for the set screw on a gooseneck coupler. Part number BLTL-51. This particular part number does not come with a padlock to secure it. They are sold separately as part number ML40D. Or you can purchase part number BLTL-51-40D which includes the padlock. In addition to the set screw lock we've also installed the gooseneck coupler lock, part number BLTL-50-40D.
Note: Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.