3/4 J-Bolt Aluminum Gate Adjustable Hinge (Pair). Hinge pivots on a steel ball bearing and includes a grease fitting to keep the bearing lubricated. The minimum gap between the post and edge of gate frame is 3. The maximum spread between the two nuts on the threaded part is 5. J-Bolt pivot hinge is a very heavy duty hinge specially made for heavy gates and doors. This hinge will swing a full Circle if installed without a stop. Hinge is made up of a mounting plate which welds to Aluminum Post (not included). The J-Bolt arm which attaches to the gate frame and is adjustable. Price is per Pair. Male J-Bolt is Galvanized Steel. Female is Aluminum – With Grease Fitting. Attaching Plate is Aluminum 3/8″ X 11/2″ – with 2 3/8 Pre-drill Mounting Holes. Transit time includes normal weekdays.