Include powder coated and nylon coated. It can use in notebooks, diaries, photo albums, catalogues and so on. 1.All colors are available 2.Specialties are customized 3.Innocuous material, which has passed the strict SGS, FDA, DINP and DEHP, can sell to the Occident. 4.Free for precutting 5.High quality makes the product stable, uneasy to deform, rust or age and it cost reasonable price 6.Full range of sizes from 1/4 inch to 1-1/2 inches Double Loop WireBinding inchmmPitchinchRecommended Max ThicknessApprox Number of Sheets(80g) 1/46.43:13/164.845 5/167.93:11/46.460 3/89.53:15/167.975 7/1611.03:13/89.585 1/212.73:17/1611.1100 9/1614.33:11/212.7120 5/8163:19/1614.3135 5/8162:15/814.3135 3/4192:19/1617.5165 7/822.22:13/420.6180 125.42:17/823.8200 1-1/431.82:1123.8220. Pieces or spools in boxes.