This is our 316 Stainless Steel Hinge. These are sold as single units. These hinges are typically used in the marine industry for lids, hatches, compartments, and doors. They have a range of about 270 degrees. The dimensions are 15cm length, 2.5cm wide, Centre to centre of the mounting holes is 2.5cm apart. Hinge mount plates are 0.5cm thick.