Comparison : Item # 1317-12-100, 3/16" Tube O.D. (3/8-24 Thread) x 3/16" Tube O.D. (3/8-24 Thread) x 3/16" MPT Inverted Flare Male Branch Tee Brass
Item # 1317-12-101, 1/4" Tube O.D. (7/16-24 Thread) x 1/4" Tube O.D. (7/16-24 Thread) x 1/4" MPT Inverted Flare Male Branch Tee Brass
Item # 1317-12-102, 5/16" Tube O.D. (1/2-20 Thread) x 5/16" Tube O.D. (1/2-20 Thread) x 5/16" MPT Inverted Flare Male Branch Tee Brass
Item # 1317-12-103, 3/8" Tube O.D. (5/8-18 Thread) x 3/8" Tube O.D. (5/8-18 Thread) x 3/8" MPT Inverted Flare Male Branch Tee Brass