Briwax chair fixs unique formula swells the joints making them as tight as when they left the workshop and then seals them which stops further shrinkage it is suitable for all types of wood where round or square tenons join such as wooden chairs tables staircases and other fine wood furnishings it comes complete with a syringe and a set of industrial needles as well as an application cap to get into all those really awkward places chair fix has been highly recommended by antique restorers and fi