The set consists of new resin ailerons, elevators and standard rudder for the Revell kit. Why did we make them? The kit parts have nice fabric rib tape detail, but it is overstated, and the trailing edges are quite thick when assembled. It takes a good bit of careful sanding and shaping to thin the edges and make the fabric detail properly subtle. We have done it for you. For Revell's Bf-109G series. May fit other kits. Master patterns by Roy Sutherland (designed to be used with Revell kits)