Directs its power towards the item under your control at all times! A revolutionary advance in PK rings. Magnetically switch, change, and control cards, stop time, perform killer ring on string routines, PLUS you'll learn how to transfer magnetism for linking effects! The curve is graduated at a specific rate, allowing you to use this ring in your everyday magic. This is a size 9 wedding ring. Magnetized across the diameter - perpendicular to your finger. This ring has an inside diameter of 18.9 mm. Each PK Master Ring has been plated to twice the normal thickness of silver and a clear rubber coating is applied on the gold to minimize wear in normal use. This is a silver colored ring (gold colored is also available) in medium (size 9).