Crown Cryo Captive Ring Tool - 9.5mm(3/8")

Now benefitting from cryogenic treatment, these ingenious tools are used to produce rings that remain captured in the workpiece, such as found in babies' rattles. Conventionally they have been produced in right and left hand patterns to produce the two sides of the ring but Crown, in their innovative manner, have produced a left and right handed combination tool which does both jobs. All you need to do is decide on the size and get turning.