Skateboard trucks are the axles that connect the deck to the wheels. Choosing the right trucks for your skateboard is crucial since they have a large impact on your performance. 

Skateboard trucks are constructed from multiple smaller parts such as the baseplate, hanger, axle, kingpin, and bushings, which all have their specific functions. Trucks come in different hanger and axle widths, usually described in inches. It is important to remember that truck sizes are not standardised and can vary between different brands.