Made using the highest quality materials</br>Tested for durability</br>Precision engineered</br>Diameter: 31.8 millimeter?? Diameter: 31.8 millimeter?? Seat Collar Diameter: 31.8 millimeter?? Seatpost Color: Black</br></br>Product Description</br></br>Since 1981?? L.H. Thomson has been a leader in creating aerospace parts and assemblies through CNC precision manufacturing. By focusing on superior quality and innovative