Specifications:- Each Overall Dimension(LxDia.): 7"" x 7/8"" (17.7 x 2.3 cm)- Each Hook Length: 1 1/16"", 1 1/8"" (2.7, 2.9 cm)- Each Spring Diameter: 7/8"", 3/4"" (2.3, 1.94 cm)- Each Wire Diameter: 1/8"" (3.2 mm)- Each Coil Numbers: 39- Material: Galvanized Steel- Total Net Weight: 23.8 Lbs (10.8 kg). Package Contents:- 80x Trampoline Springs