Features:1.Premium Material: Made of aluminum alloy, anti-oxidationthe finish is anodized.2.Size: Bike seat tube clamp with the inner diameter of approx. 41mm suit for 33.9mm seat tube clamp , the weight of approx. 62.8g.3.Design:They have a machined out hollow lever design and low profile sleek retaining bolts.Ergonomic design,Extended lever, more efficient and comfortable.4.Easy Use: Bike seat tube clamp is made of aluminum alloy fiber quick release bike seat clamp, easy to use and high quality5.Suitable: Suitable for all kinds of bike,mountain bike ,folding bike,track bike,fixedgear,road bike and so on. Notice:Actual color may be slightly different from the image due to different monitor and light effectPlease allow 1-3cm deviation due to manual measurementDescription:1.Material: aluminum alloy2.Size: 41MMPackage List:1 x Bike Seatpost Clamp Saddle Tube