... ,22 1/2*1/2 12.7MM*12.7MM 16,17,18,19,20,21,22,23,24 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 14,15,16,17,18,19,20 1 ... /2 38MM*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*2 50.8MM*50.8MM 12,14,15 ...