Perfect for sizing rings Handy and portable No soldering required Increase rings measuring P, R, U, W, Z, Z+3 and Z+5 This handy Rathburn Ring Stretcher has been designed to easily and simply enlarge rings. Rathburn ring stretchers are a portable tool that can be used on the go. The sizer can be used to increase the size of the ring that measures approximately P, R, U, W, Z, Z+3 and Z+5. This tool comprises of a nylon base which holds the tool securely, defusing the noise and preventing damage to your worktop. To use the ring stretcher, first measure the ring and ensure that the size coincides with the above suitable sizes.
