... /4*1/4 6.4MM*6.4MM 22,23,24,25 3/8*3/8 10.6MM*10.6MM 19,20,21,22 ... 5/8*5/8 16MM*16MM 18,19,20,21 3/4*3/4 19.1MM*19.1MM 16,17,18,19 ... ,20,21 1*1 25.4MM*25.4MM 14,15,16,17,18 ... *38MM 14,15,16,17,18,19 1*1/2 25.4MM*12.7MM 16,17,18,19,20,21 1 ... *2 25.4MM*50.8MM 14,15,16,17,18,19 2 ... 50.8MM*50.8MM 12,14,15,16,17,18 3*3 75MM*75MM 16,17,18 4*4 100MM*100MM 12 ...