Machined Billet Aluminum Old Man Emu Detailing Internal Spring Design Each Weight: 0.42oz / 12g Hole to Hole (Compressed): 2.4in / 61mm Hole to Hole (Uncompressed): 3.15in / 80mm Overall Length: 3.5in / 89mm Travel Length: 0.66in / 17mm Shock Body OD: 0.39in / 10mm Shaft Diameter: 0.13in / 3.5mm Shock body OD: 0.39in / 10mm