Double action trucks are made of high-quality aluminum alloy, light but durable. The roller skate truck replacement parts are cast in one piece, which is strong and not easy to break. Aluminum alloy truck castings are surface polished, smooth without bumps. The axle length on both sides of the roller skate plate truck is 33mm, and the axle diameter is 8mm. Each pack includes 2 pcs roller skate triangle trucks only, no other hardware and screws. Additional mounting hardware and screws not included!!! Please confirm before ordering! Colour:Silver Material:aluminum alloy Package Contents: 2 * roller skate triangle trucks Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.