Ader Trampoline Parts, Legs, Springs Ader trampoline parts Legs: 7.38"x1" for 36, 38, and 40" trampoline; Legs: 8"x1" for 48" trampoline Springs: 16 Coil x3.4" for 36, 38, and 40" trampoline; Springs: 18 Coil x 3.6" for 48" trampoline All parts are sold as a pair (2 pieces).