This set consists of detailed separate resin elevators and ailerons to replace the Eduard kit parts. The Eduard new tool Tempest kit tends to suffer from hard-to-fix shrink marks on the one piece solid molded ailerons and elevators. Filling and sanding them wipes out the very fine rivets and panel lines. Restoring them can be a lot of fussy work. This set makes short work of that. For all marks of Eduard Tempest. Master patterns by Roy Sutherland.