Non-marking Rubber Coating The hooks feature a non-marking rubber coating, ensuring that your bike frames remain scratch-free. Versatile Bike Support Arm Design The support arms of this product are designed to be adjustable, ensuring compatibility with a wide range of bike styles and frame shapes. It can accommodate wheels ranging from 24 to 29 inches in diameter. 5-level Thickness Rubber Feet Featuring five levels of thickness adjustment, this stand's rubber feet caps offer exceptional stability. You can easily adapt to different surfaces, ensuring a secure placement, even on rough ground.