380mm (14.96″) total length 360mm (14.17″) eye to eye Eye Diameter: 10mm/12mm/14mm Package includes 1 x Motorcycle Shock absorber Provide Different Colors.A small knob is an air cock. Pls kindly that please do not touch it and not screw it out when installing the shock. Once screwed out, it will spray oil out. A big knob is a decoration cap, which can not be adjusted. Description: 380mm (14.96″) total length 360mm (14.17″) eye to eye Eye Diameter: 10mm/12mm/14mm Spring thickness: 8mm Diameter of Clevis: 27mm Max loading: 300 kg (661bl) Package Including: 1 Pair Shock absorbers A small knob is an air cock. Pls kindly that please do not touch it and not screw it out when installing the shock. Once screwed out, it will spray oil out. A big knob is a decoration cap, which can not be adjusted.