... , calendars, notebooks, proposals, summaries.1,Material:nylon coated wire2,Size: 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 ... )Recommended Max Thickness (mm)Packing in Spool3/16"3:14.80 0.64 3.0 118,000 1/4"6.40 0 ... 8"2:115.90 1.10 13.8 10,000 3/4"19.00 1.15 15.0 7,000 7 ... /8"28.57 1.30 25.0 3,000 1-1/4"31.75 1.40 27.0 2,000 Book Binding Material