(inch)

       (mm)                             

 (BWG)                              

1/4"x1/4"

6.4mmx6.4mm

22.23.24

3/8"x3/8"

10.6mmx10.6mm

19.20.21.22

1/2"x1/2"

12.7mmx12.7mm

16.17.18.19.20.21.22.23

5/8"x5/8"

16mmx16mm

18.19.20.21.

3/4"x3/4"

19.1mmx19.1mm

16.17.18.19.20.21

1"x1/2"

25.4mmx12.7mm

16.17.18.19.20.21

1-1/2"x1-1/2"

38mmx38mm

14.15.16.17.18.19

1"x2"

25.4mmx50.8

14.15.16

2"x2"

50.8mmx50.8mm

12.13.14.15.16

1/4x1/4"

6.4mmx6.4mm

12.13.14.15.16