Came across these while browsing CloudyNights.
They are screw-in Barlows, designed for binoviewers and eyepieces. They're apparently quite new to the market and I haven't found many reviews of them yet.
I guess they're similar to the 1.6x nosepieces that come with many binoviewers, but possibly of higher quality since they're made by Vernonscope.
Might be of interest for anyone looking for a Barlow with less than 2x magnification.
Here's the link to the manufacturer's site:
http://vernonscope.com/index.php?rou...product_id=138