Are you looking for a post of sete spring pm-705n 27.2 x 350you will find more information about this item below. Do you have any questions? Please contact customer service Decathlon. High-quality parallelogram seat post with at least 111 mm height, two m8 screw attachment and 30 to 60 mm offset plus adjustable tension. Rebound suspension for driver weights from 70 to 90 kg. Optional rebound springs available for different weight classes as accessories. Suitable for rail diameter 7 mm. safety level: 5 material: already 7075 t6 diameter: 27.2 mm length: 350 mm offset: 30-60 mm minimum overall height above frame: 111 mm finish: sand to sand weight: 612 grams rider weight: 70-90 kg spring system: rebound