Description: Skateboard truck bushing is made of high quality PU, durable, lightweight. Used to improve your skates truck performance, smooth and good skateboarding experience. 12 pieces per pack, including 2pcs bottom bushings, and 2pcs top bushings, and 4pcs cups set: 3.25inch, 5inch, and 4 pcs washers. With hardness, high elasticity for shock proof, wear and corrosion resistant. Accessories set for skateboard, longboard, truck in outdoor sports. Specification: Material: PU Size Chart: For Conical Bushing: Size ( H x Top Dia. x Bottom Dia.): Approx. 11x16x24mm / 0.43x0.63x0.94inch Cylinder Bushing: Size ( H x Top Dia. x Bottom Dia.): Approx. 16x24x24mm / 0.63x0.94x0.94inch, Inner Diameter: Approx. 9mm / 0.35inch For Cups : 3.25inch : Size ( ID x OD ): Approx. 10x12mm / 0.39x0.47inch 5inch : Size ( ID x OD ): Approx. 12x16mm / 0.47x0.63inch For Washers: Big Size (ID x OD): Approx. 11.5x24.5mm/ 0.45x0.96inch Small Size (ID x OD): Approx. 11.5x27.5mm/ 0.45x1.08inch Package Includes: 12 Pieces Skateboard Truck Bushings Set Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 3. Wish you a wonderful on-line shopping!