Part Number TL-50 TL50 ? Feature This gooseneck trailer lock better helps you to watch your trailer. When you don't have time to watch your trailer you can use our gooseneck trailer lock, which is designed for people who leave their trailers unattended. Precision manufactured from the highest grade aluminum, this gooseneck trailer lock has a 3/4-inch heavy-duty steel latch. The gooseneck lock body has an adjustable two-pin position for easy customization to fit your trailer. This gooseneck trailer latch is resistant to wear and corrosion, will not rust, and will last a long time. This gooseneck lock is made of the highest grade aluminum and can be used repeatedly, even if placed in a very harsh environment will not rust very resistant to wear and corrosion. To use, mount the narrow end (looks like a gooseneck) on the connector bracket near the handle. Place the wide opening of the TL-50 in position over the wide part of the coupler. Insert the pin into the hole that provides a tighter connection, then install the padlock. ? Specification Replacement for heavy trailers, livestock haulers, RV's Replacement for all gooseneck 2 5/16 style couplers, Replacement for Bulldog, T.E.M., TEMCO, and Hammerblow/Cequent to name a few Adjustable 2 pin placement for easy custom fit Solid hardened steel lock rod for security Manufactured from the highest grade aircraft aluminum ? ?Include: As shown in the picture One coupler lock A combination lock.