Jet Intl 201301, HydraBaths Standard, 2-1/2"fd, Dir, Smth, White Installation Type - Thread In Face Diameter - 2-1/2" Jet Part Type - Internal Base Diameter - 1-5/16" w/Threads Total Length - 1" Manufacturer - HydraBaths Model - Standard Color - White Internal Type- Directional Face Style - Smooth Special Feature - Front Access Identical to - FJ101