pitch 3 1 spiral book binding

{"cid":"91198067","title":"7\/8 Inch Plated Coil Spiral Book Binding Steel Wire 20.6mm Thickness","imgUrl":"https:\/\/img.chinax.com\/nimg\/07\/f3\/a7ced16f841eddac719b8560f84b-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Sudi","Model Number":"7\/8\u201d","Minimum Order Quantity":"500pcs","Delivery Time":"15-30 days","Certification":"ROHS , SGS , CPST","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Packaging Details":"Export carton","Supply Ability":"2000 cartons","Keywords":"Electroplated double ring binding","Color":"Colorized \/ multi colors","Material":"Steel Wire","Finish":"Glossy Nylon coated\/plating","Product Size":"7\/8 inch","Pitch":"2:1","Packing":"In spool or carton box","Factory Loacation":"Dongguan City","Binding thickness":"20.6mm"}}

{"cid":"91195494","title":"6.29mm Pitch Plastic Single Spiral Coil Binding Punching Machine","imgUrl":"https:\/\/img.chinax.com\/nimg\/6d\/5d\/21f416b8c70700b92773b61faddc-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Nanbo","Model Number":"C9028A","Minimum Order Quantity":"2","Delivery Time":"10-15 days","Place of Origin":"China","Payment Terms":"T\/T, Western Union, MoneyGram","Supply Ability":"100,000 pcs per Month","Packaging Details":"2Pcs into one box, box size :510x480x400mm\/18kg","Keywords":"C9028A Electric Automatic Plastic Single Spiral Coil Binding Punching Machine From Chinese Factory","Series":"Coil Binding Machine","Model No.":"C9028A","Advantage":"Convenient desktop binding machine","Max.Punching":"22sheets","Paper size":"A4\/A5","Max bind":"500sheets","Paper Margin":"2.\/4\/6mm","Delivery":"10-15 days","Application":"Office or simple industry use","Coil":"Plastic or metal","Binding method":"Electric","Profession":"Binding materials, wire binding machine, comb binding machines, etc."}}

{"cid":"91170706","title":"G20 Book Binding Wire Stitching 0.8mm 3:1 Pitch Spiral Steel Coil Calendars","imgUrl":"https:\/\/img.chinax.com\/nimg\/d4\/1e\/36471bc6dcff64401f67f1951c23-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"Ceres","Minimum Order Quantity":"1 box","Delivery Time":"5-8 days","Payment Terms":"Western Union, MoneyGram, T\/T","Supply Ability":"50 boxes \/week","Name":"Stitching Wire for Book Binding","Material":"Low Carbon Steel Wire","Size":"G20-G28","Weight\/box":"2 kg \/pc","Usage":"Binding Material","Moq":"1 box","Deliver":"Express and sea"}}