Features1High quality, CNC Machined, hollowed out lever 2High shine and color 3Easy to install and use 4Hollow lever design and rust-resistant high quality retaining bolt 5Thumb screw for accuracy & a quick release lever for ease of useSpecificationDescriptions:This quick release seat post clamp is extremely strong and light. Engineered to provide an efficient clamping action without slipping even in wet and muddy conditions. It's great for any style of bike in need of securing a seat post. Features:High quality, CNC Machined, hollowed out lever High shine and color Easy to install and use Hollow lever design and rust-resistant high quality retaining bolt Thumb screw for accuracy & a quick release lever for ease of use Caliber: 31.8mm31.8mm seat post clamp is generally suitable for 27.2mm seat postNote: The diameter of the clamp you need is the frame NOT the diameter of the seat post. Package Included:1 x Seat Post ClampPackage List