1. Sagittarius coil suspension : Equipped with internal spring coils and shock -absorbing rubber, absorbs vibrations during bike, provides a comfortable driving experience and improves the effect. Adjust the recoil force by squeezing or loosening the lower screw. Suspension trip 40mm/1.65 inches. The wrong diameter cannot be installed, 27.2mm/28.6mm/30mm/30.4/30.9/31.6/33.9 is different and cannot be changed. If you remove it from the frame, you can see the diameter of your seat. Acceptable clamping angle: The clamp angle of the saddle can be adjusted -5 degrees+18 degrees. Clamp offset 14mm. Offset: 14mm. Weight: about 490g (1.08 lbs) damping: coil broadcast, Seatpost thim to sit in a different size (27.2 ~ 28.6/30.9/30.8/30.9/31.6/33.9)) 4. Compliance, Mountain Bike: The most fixed toothed bikes and so on. Support Weight 50kg/ 110LBS to 100kg/ 220LBS (If you are heavy, if you are light clockwise clockwise clockwise)