D-ROTO-A2 diagonal upgrade

The Rotolock mechanism is a huge step up from the standard compression ring; I can swap eyepieces without worrying about them slipping. The build quality feels solid and precise, and it locks everything in place perfectly.

Finally, a diagonal that lets me swap eyepieces without losing alignment—the rotating lock ring is super convenient in the dark. I’ve used it on several sessions now and the grip is solid every time.

Swapped the stock adapter for this RotoLock upgrade and the twist-to-lock grip is a game changer—no more fumbling with thumbscrews in the dark. The 2-inch eyepiece fits snugly and stays put through my whole session.