300 micron Stainless steel mesh infusion tube.

30cm tall x 6.6cm wide

Has a threaded screw lid with wide 7cm access for filling with hops, herbs or other ingredients. 

Ring at top to thread a thin wire (nylon fishing line)   for suspending the tube in liquid

Long slender profile enables this infuser to fit through the oval lid in Corny style kegs  for adding hop flowers or other infusion flavours etc.

These filters are also popular for cold coffee brewers.