Great-Planes #GPMGPMR2300. The Wing Jig holds wing ribs in perfect alignment during construction. It will accomodate a 34" panel to build up to a 68" tapered wing. Constant chord wings can be built to any size. All hardware is included. This jig works well with wing kits that have holes drilled for jig rods. Most of the newer Great Planes wing kits have interlocking parts that build directly over the plans.