Reference
Choose:

Color Chart (SRM/EBC)
1/2 2/4 3/6 4/8 5/10
6/12 7/14 8/16 9/18 10/20
11/22 12/24 13/26 14/28 15/30
16/32 17/34 18/36 19/37 20/39
21/41 22/43 23/45 24/47 25/49
26/51 27/53 28/55 29/57 30/59