General description Double action trucks are made of high-quality aluminum alloy, making them lightweight yet durable. The roller skate truck replacement parts are cast in one piece, ensuring strength and resistance to breakage. Technical specifications Material: Aluminum alloy Axle length: 33 mm Axle diameter: 8 mm Color: Silver Measurement allowed error: +/- 1-3 cm Compatibility and accessories Includes: 2 pcs roller skate triangle trucks Additional mounting hardware and screws are not included Other information