Tube Diameter

0.375 in.
0.75 in
1 in
1"
1" (25.4 mm)
1-1/2" (38 mm)
1-1/4
13 mm
13.5 mm
18"
2" (51 mm)
2.5 inch
20"
25.4 mm
25mm
3 inch
3/4 in (19 mm)
3/8
3/8" (10 mm)
30 mm
30mm
34 mm
35 mm
40 mm
9/16