My sister was recently in the UK and brought a number of glues back with her, this is one
The concept is you put it where you want it, point the UV light at it and whammo.
I was initially disappointed with it, I used it to repair Marys' glasses, they broke the next day.

Obviously I was expecting too much. It also doesn't 'wick'
I'm building a Dancing wings Bobber, using Aliphatic glue it's perfect, place the Aliphatic along the joint line leave a small space for the Roket, put a blob of Roket on the joint, position the part, shoot it with the UV, and Robert's your Aunties husband. No more using clamps, or holding the part for hours like I used to do as a kid.