10x Heavy-Duty Galvanised Trampoline Springs Replacement Spring

Description: - High-quality material: stainless steel raw material, corrosion-resistant, not afraid of bending, good elasticity - Good stretchability: uniform force, more firm - New waist drum design, Seiko forged surface is smooth and burr-free - Strong hook: high temperature ...Description: - High-quality material: stainless steel raw material, corrosion-resistant, not afraid of bending, good elasticity - Good stretchability: uniform force, more firm - New waist drum design, Seiko forged surface is smooth and burr-free - Strong hook: high temperature quenching treatment, high strength - A variety of specifications are available to meet most needs Specification: - Material: No. 70 carbon steel