The overall diameter is 50.7mm. The overall height/depth is 22mm. The hole is inset 10mm from the back (i.e., part facing the receiver) and is 10mm deep. That leaves 2mm, which is the depth of the face.

If you have 123D Design (free from Autodesk), or some other application that can interact with 123dx files, you can open the design file included on this page. If not, I can take a look in the next few days and get back to you.

Could you give me info on the diameter of the whole piece and depth of the hole? Thanks