Hinged ring with 6 Spikes *for all cb 40 mm

Possible diameters
36 mm (1.417inch), 38 mm (1.496inch), 40 mm (1.575inch), 42 mm (1.654inch), 45 mm (1.772inch), 47 mm (1.85inch), 50 mm (1.969inch)

The two spikes on top of the ring are adjustable. This spikes are covered. Through this any manipulation is not possible. The corresponding key is enclosed. The 4 spikes below at the ring have a length of 5mm (0.197inch) and are not adjustable.