Upper Bounce Universal Trampoline Fiber Glass Rods to Replace Top Ring of Net Enclosure Get this Strong and Durable Fiber Glass Rods to fit any 15' round trampoline frame and your net will stand tall and straight again! Complete Set Includes Fiber glass rods and 6 Pole Caps To fit 15' frames using 6 CURVED poles Trampoline poles should measure 1.5" Diameter