... diameter(BWG)inchmm1/4" x 1/4"6.4 x 6.422,23,243/8" x 3/8"10.6 x 10.619,20,21,221 ... ,21,3/4" x 3/4"19.1 x 19.116,17,18,19,20,211" x 1/2"25.4 x 12.716,17 ... ,20,211-1/2" x 1-1/2"38 x 3814,15,16,17,18,191" x 2"25.4 x 50.814,15,162 ... " x 2"50.8 x 50.812,13,14,15,16PVC ... ,19,20,213/4" x 3/4"19mm x 19mm16,17,18,19,20,211" x 1"25.4mm x 25.4mm15,16,17,18,19 ...