The redesigned Zero post provides non-slip saddle engagement and advanced adjustability by securing the rails with front and rear bolts. Whether you're rough, single truck or rush re-mount, the saddle will stay exactly where you want it. 3D Forged 6061 Construction Diameter: 27.2mm Zero Offset Front and Rear adjustment bolts for precise adjustments and solid clamping Length: 400mm Finish: BB Black Weight: 240g (27.2x400mm)