Home / Breakaway Kits / Hardware / 4 1/2″ Butterfly Hinge 4 1/2″ Butterfly Hinge SKU: J-TBH02 Category: Breakaway Kits / Hardware Description Description Butterfly-style hinge for welding, often used for heavy-duty applications. 4-1/2″ (4.5 inch) length. Raw steel finish. 7/16″ pin diameter. Includes a grease fitting for lubrication. Typically 9-gauge steel Related products Pin for Break Away Kit Read more Switch Assembly for Break Away Kit Read more 1 3/4″ Round Mounting Bracket Read more complete break away kit with 4′ cord Read more