TYPE: GAS PRESSURE UPPER FIXATION: EYE INNER EYE DIAMETER: 10 MM LENGTH: 440MM LOWER FIXATION: EYE INNER EYE DIAMETER: 10 MM ADJUSTMENTS: VARIABLE SPRING PRELOAD SPRING CHARACTERISTIC: 25-35 SPRING LENGTH: 240 MM SPRING DIAMETER: 46 MM COMPENSATION DEPOSIT: YES PISTON DIAMETER: 36 MM PISTON ROD DIAMETER: 12 MM