The low profile design of these L Track fittings with bolt thread makes them a versatile component for use in motorcycle tie-down systems, ATV tie-downs, and other recreational cargo control uses. The double stud configuration slides into two slots on an L track tie-down rail to offer maximum securement and strength. A threaded housing on top can receive a 3/8" bolt with a 24 thread. Installing these airline track accessories is a snap. To slide into place: lift the end clip and insert the two bottom discs into the track slots. Slide until it's halfway between two slots and release the clip to lock the fitting in place. L Track, also known as Logistic Track or Airline Track is a versatile tie-down system used to secure a range of cargo. It is commonly installed in pickup truck beds, vans, utility trailers, and more. So, before you secure your cargo for transit, tie-down with confidence using high-quality and reliable L Track Accessories like this L Track Double Stud Fitting with Bolt Thread from US Cargo Control! Sold as a 10-pack.