14 gauge male joint. Fits 90 degree joints. 
If your joint on your water pipe is 14 female and the joint faces straight up then this will work for you. 
The purpose of an ash catcher is to act as an external perk, also to catch ash and debris to keep your water pipe cleaner longer! 
Dis

Arms to honey come Ash catcher by GROW GLASS

$60.00 Regular Price
$30.00Sale Price