[Product Specifications]: Diameter: 27.2mm (with 28.6 to 30.4mm bicycle saddle), Length: 330mm, Travel: 80mm. Offset: 5 mm, Bracket: 43x32 mm, Angle: -5 ~ 18.[Easy Height Adjustment]: With the dropper post cable control lever, the hydraulic system can provide enough pressure for a better riding experience, the height can be freely adjusted between 0~80mm without stopping.[Quality product]: AL7075 3D cold forging body, strong and durable. Weight: Approx. 576 grams (1.27 lbs). - 5 ~ 18 adjustable double bolt head, help the saddle to easily switch to the right angle. 1500mm (4.92ft) internally routed dropper post cable kit, enough to allow you to mount a 27.2mm dropper post on your handlebar.[Warm Tips]: (1) Dropper post cable kit is placed separately, please check the instruction page to assemble (2) is 27.2mm internal routing dropper holder, please check your frame type and top tube inner diameter , suitable for internal cable mountain, road, mountain bike, fixtures, downhill, BMX, etc.Colour: blackMaterial: aluminum alloyPackage Contents:1 * 27.2 tube1 * 28.6mm/30.4mm Reducing sleeve1 * English manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.