This is a high quality machined part. Outer diameter is 0.998", thread diameter is 0.857" with about 20 TPI, overall length is 3.267", weight is 34g. Has one O-ring (included) at the threaded end.
Unfortunately, this cannot be used to adapt a Lazerer Rifle to use 18650 batteries due to incompatible threads.
Reviewed by: Richard from Arizona.