Oxford Rotaforce Ground AnchorRotaForce is a bolt down rotating ground anchor. Its unique rotating head allows easy fitment and much better bike positioning. The RotaForce has been independently and rigorously tested and obtained Sold Secure Powered Cycle (Motorcycle) GOLD and is SBSC certified. Key Features Bolts down with 4 security bolts Unique rotating head allows easier fitment and better bike positioning 26mm diameter case hardened steel head resists all forms of attack