G PART NO. mm mm 3 11 D-CAP3 6 14 D-CAP6 8 16 D-CAP8 10 19 D-CAP10 12 22 D-CAP12 14 25 D-CAP14 15 25 D-CAP15 16 25 D-CAP16 18 30 D-CAP18 20 32 D-CAP20 22 32 D-CAP22 25 38 D-CAP25 TUBE OD - T G PART NO. inch MM 1/8 11 2D-CAP 1/4 14 4D-CAP 5/16 16 5D-CAP 3/8 17 6D-CAP 1/2 22 8D-CAP 5/8 25 10D-CAP 3/4 30 12D-CAP 7/8 32 14D-CAP 1 38 16D-CAP