AP17 3/4~1 inch Car W/STEP Key Engine Pulley Crankshaft Sleeve Adapter

1. Change the motor with different diameter shaft.
2. Change belt pulleys at different speeds, reducing the need to purchase new motors or pulleys to maintain existing components and speed/power requirements.
3. Adapt larger wheel holes to smaller axles, work with air crankshafts, expand crank diameter to accommodate pulleys, gearboxes, etc.
4. Material: Iron
5. Size: 58x25mm