Features1The seat post clamp is made of aluminum alloy, durable and anti rust, can be used for a long time. 2It has a wide application, suitable for all kinds of bicycles, can protect your cute bicycle. 3Easy to install and disassemble, eliminating tedious procedures, suitable for cycling enthusiasts. 4Lightweight, it does not take up too much space, and is easy to carry, well meet your travel needs. 5Non slip design, it can be firmly fixed to your bicycle seatpost by a locking nut.SpecificationItem Type: Bicycle AccessoriesMaterial: Aluminum AlloySize: Inner Diameter: Approx. 28.6mm/1.1inApplication: Approx. 28.6mm/1.1in Seat Tube Clamp, Suitable for Approx. 25.4mm/1.0in Outer Diameter Seat PostChoose According to the Outer Diameter of the Frame Riser, the Size of the Seat Tube is Printed on the Riser of the Frame, That is, the Size of the Seat Tube Clamp, Most of the Seat Tube Will Be Marked with the Diameter of the Seat Tube, You Can See by Pulling out the PolePackage List1 xSeat Tube Clamp