GU Europa 2 hooks & 2 rollers features 2 hooks and 2 rollers outside the hooks. It has a solid spindle and 1,575mm between the outer rollers. Locking points are engaged by lifting the lever and locked by turning the key. To change handing, push a flat bladed screwdriver into the small rectangular slot above spindle and pull out latch at same time. Reverse and reinsert.