1. Material: iron + aluminum alloy + plastic 2. Compatible with: 12-inch to 29-inch quick-release wheels 3. The rim mount rotates 180 degrees to adjust the front and rear wheels to the desired angle. 4. Durable aluminum alloy pins wrapped in rubber protect the rims from wear. 5. Adjustable scale for precise runout and quick rim adjustment. 6. Foldable design for easy use and storage without taking up space. 7. Thickened tube wall with triangular side supports and four bottom points for stability during use. 8. Use the scale to observe the tire distance. Use the pins on both sides to measure the distance between the two sides of the tire. Turn the scale adjustment knob. 9. Adjustable scale position. 10. Weight: approximately 1.8kg
