Features: Accurately measure the height of the bicycles Seats to ensures comfortable cycling. Light weight and durability, easy to carry; Clear scale and simple operations. Suitable for various vehicle models, improving cycling efficiency and safety. Bicycles enthusiasts, professional cyclists, fitness enthusiasts, and beginner who need to adjust Seats height. The standard for adjustment before daily cycling, race preparation, long-distances travel or fitness training is high. Specifications: Color:Three Elecions Dimension:10040mm/3.931.57in Component:Plastics Package Includes: 1pc Bike Seats Height Measuring Tool note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.