ITEM NAME:Skateboard Driven Wheel Bracket Shaft Four-Wheeled Electric Skateboard Univ N8Y3 Skateboard Driven Wheel Bracket Shaft Four-Wheeled Electric Skateboard Univ N8Y3 trucks are your all-around "go anywhere, do anything†trucks perfect for any terrain. SUPER STABLE: Meet the perfect all around longboard truck. It can be configured in hundreds of ways to achieve the perfect feel. NO SLIP BUSHING SEAT:The redesigned bushing seat eliminate excess movement that keeps your weight distribution from translating to turn. Have a precision feel for a fraction of the cost. The open, unrestrictive bushing seat provides a full tilt, turn that’s perfect for a smooth, carvy setup. The Hall Sensor Inside Tracks the Motor’s Position. This Information Permits the Controller to Alternate Power with the Right Timing and in the Right Sequence. Center Hole:8mm Center Square Hole:12mm Sensor:Sensored colour:black Material:metal size:Total length of shaft: 245mm Base width: 45mm Base length: 100mm Shaft diameter: 8mm Package Contents: 1 * skateboard bridge 1 * base 4 * screws 6 * nuts