Here is the square water pipe bong glass WPA kit for tinymight 2 and 1. There are 2 different square versions to choose. the normal 2 joints version (both are 14mm),  the 3 joints version (two 14mm and one 10mm version).  The WPA also has two versions, 14mm or 3 in 1 version.

The package includes the square kit and 1pc WPA glass.