I have just taken delivery, and coincidentally purchased the last of Williams Optics (WO) exquisite 2" Dielectric Diagonals.
It is the most gloriously Steampunk of any Diagonal I have ever seen. Its' tech spec are great, at the end of my 130mm refractor, the thing just looks bloody inspirational, begging to be turned towards a dark sky.
Including a Rotolock, they represent great value.
(WO fanboy)
https://williamoptics.com/products/d...-2-wo-diagonal