Description: CNC Machined aluminum alloy quick release seat post clamp- lightweight and durable. Hollow design,easy to install and use. 30mm seatpost clamps suitable for 27.2mm/25.4 mm seatpost. Quick release lock design,you can adjust the clamp on the way even without any other tools. Seat clamp with extra long quick release lever for added clamping force. Suitable for , mountain bike, folding bike, track bike, fixed gear, road bike etc. Specification: Material: Aluminum Alloy Clamp Diameter: 30mm Color: Black Red (Optional) Package Includes: 1 Piece Bike Seatpost Clamp Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks! 30mm Bicycle Saddle Tube Pole Clip Mountain Road Bicycle Seatposts Clip Component Cycle Seat Saddle Clamp Parts