A.S.P. Engines 40-46 Idle Adjusting Screw and Spring.  For RC Radio Control Airplane Engines. Fits ASP 40, 46. Engines. May Fit Others. Part # 40746. . In Original Package Made In China By I.S.C. International Trading Company.  Check out all the pictures as pictures are part of the description. Item pictured is the one that you will receive. I combine shipping on multiple items won. Check out my store PTN#1SELLER for more Radio Control Engines Parts and Accessories.