Part No. UCR Size Tube O.D. D Dimension (mm) inch inch mm A F-CBG-04- 1/4 1/4 6.35 33.30 F-CBG-08- 1/2 1/2 12.70 38.10 F-CBG-12- 3/4 3/4 19.05 50.80 F-CBG-16- 1 1 25.40 50.40