Comparison : Item # 1031-1935-61-08-08, 1/2" Tube O.D. x 1/2" Tube O.D. Flange Steel SWP-Flange O-Ring Face Flat Socket Block Pipe Code 61
Item # 1031-1935-61-08-08-K, 1/2" Tube O.D. x 1/2" Tube O.D. Flange Steel SWP-Flange O-Ring Face Flat Socket Block Pipe Code 61
Item # 1031-1935-61-12-12, 3/4" Tube O.D. x 3/4" Tube O.D. Flange Steel SWP-Flange O-Ring Face Flat Socket Block Pipe Code 61
Item # 1031-1935-61-12-12-K, 3/4" Tube O.D. x 3/4" Tube O.D. Flange Steel SWP-Flange O-Ring Face Flat Socket Block Pipe Code 61
Item # 1031-1935-61-16-16, 1" Tube O.D. x 1" Tube O.D. Flange Steel SWP-Flange O-Ring Face Flat Socket Block Pipe Code 61