Stainless steel motorcycle exhaust muffler mounting springs provide superior strength and appearance The 65mm length is from the outer edge of the spring to the outside of each hook with swivel end The mounting springs A good accessory for your motorcycle exhaust pipe Package Contents: 4pcs (2 x mounting springs, 2 x welding fasteners) Muffler pipe springs Total length: 65mm / 2.56inch; Spring tube diameter: 1cm / 0.39inch.