Includes 2 Trucks. Caliber II 184mm (10"). 50 degree baseplate. Updated bushing seat providing a perfect no-slip-fit. Pivot re-designed for tighter tolerances with an updated chamfer. Circular kingpin hole with updated diameter. Truck strength increased by 40%. Pressed-in Grade 8 hex head kingpin. Beefed up and reinforced baseplate. Thinner paints used for tighter tolerances.