This is the Official Halo Perc Filter by STAX from GRAV Labs. This glass piece is made out of Borosilicate Glass.
The Halo Perc Filter has both a Male and Female joint type, you can add attachments to this piece to make the ultimate bong.
Cleaning the Halo
Cleaning the Halo is pretty simple, all you need is some Isopropyl Alcohol, Fresh Water and Paper Towels. Mix the two Isopropyl Alcohol and the Fresh Water together in a jar thats 7" or bigger, then place the Halo Perc into the jar and leave until the colouring and any dried products are removed, take out of the solution and rinse under a tap, then dry it with the paper towels.