... 3:1 ---1/4'',5/16'',3/8'',7/16'',1/2'',9/16'',5/8'' 2:1---5/8'',3/4'',7/8'',1-1/8'',1'',1-1/4 ... Diameter(mm)Wire Dia.(mm)Recommended Max Thickness (mm)Packing in Spool3/16"3:14.80 0.64 3.0 118 ... 15.0 7,000 7/8"22.20 1.20 19.0 4,500 1"25.40 1.25 21.0 3,600 1-1/8" ... 28.57 1.30 25.0 3,000 1-1 ... /4"31.75 1.40 ...