Selby's Full Mortise Champ Hinges are machined solid brass with steel linkages. The secret is in the wedge action! Just drill hole and insert! The hinges are perfect for butterfly table leaves.
Multiple sizes are available. Holes must be drilled to the exact millimeter depth.
Once hinge is inserted, the set screw is tightened which expands the cylinder within the hole, securing the hinge in place. Millimeter size Forstner bits are available for all hinges.