H-610-14P.. 14mm Champ Full Mortise Hinge. In the open position the hinge has a set screw which expands the cylinder inside the hole. Just drill hole, insert and tighten the set screw! Machined solid brass with steel linkages Drill 14mm size holes to exact depth. 14mm x 1-3/16″long for 3/4″ wood. 14mm=approximately 35/64″ Works great on things like butterfly table table leafs.