This 50mm extension is a valuable upgrade for anyone utilizing the TPO Ritchey-Chretien (RC) model it is meant for, allowing more space for assorted accessories to be used with the TPO RC model scope. This extension tube is threaded female M117x1 on the telescope side and male M117x1 on the opposite side.

This extension is compatible with the following telescopes:

TPO Product Number: E50-RC10