This adapter is an excellent value. It works well and keeps your eyepieces neat. It lacks a safety indention to keep it from falling out if the focus screws come loose. I added a shallow dent with a motor tool that serves well. The next price up from this one is a lot more money.
Pros: Well made, inexpensive,
Cons: Lacks safety indention
This review was written in the old system and had content requirements that are different than reviews written today.