These 3D printed adapters attach onto your bloc Tactical Lynx glasses and allows you to use Novritsch or DIY anti fog systems to consistently keep your glasses clear of fog / water droplets.
These spigots / bends are a snug fit inside the adapter body but for a more secure and permanent solution a drop of adhesive like superglue can be used to permanently attach the spigots in place. Sometimes leaving the bends unglued allow for more adjustment. I would recommend something less permanent like hot glue for these as it will allow for adjustment in the future.  
The main adapter body can then be slid onto your glasses and snugged tight using a 1.5mm Allen key(not supplied)
The kit comes with 8mm spigot x4 6mm spigot x4 bends x2

DO NOT OVER TIGHTEN / FORCE THE MOUNTS ON. it doesn't need much to be secure. 

any more information please don't hesitate to ask.