Made from high strength aluminum alloy to ensure its durability and a restoration against wear Bicycle seatpost clamp uses a screw and nut locking system that automatically adjusts to angle and prevents deformation caused by concentrated stress when tightening Whether you have a mountain bike, road bike or hybrid bike, this clamp offers a secure, adjustable fit With a simple design, this bicycle seat tube clamp can be easily installed without any hassle Features a hollow design to greatly reduce weight. Enjoy your bike without compromising strength, Manufacturer: QYSH-MXW