3 8 metal coil binding spines

{"cid":"91198067","title":"CPST Pantone Color 50.8mm Metal Coil Binding Spines","imgUrl":"https:\/\/img.ismap.com\/nimg\/41\/c7\/9387b6091c790f08efd56e5eec6d-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Sudi","Model Number":"2''","Minimum Order Quantity":"1500pcs","Delivery Time":"1-15 days","Certification":"ROHS , SGS , CPST","Place of Origin":"China","Payment Terms":"T\/T, L\/C, D\/P, Western Union, MoneyGram","Supply Ability":"500,000 pieces per month","Packaging Details":"Export carton","Product Name":"Metal coil binding spine","Binding Thickness":"42.8mm","spacing":"4\/1 3\/1 2\/1","Color":"custom made","the inside diameter of":"50.8mm","use":"Books, calendars, notebooks, summaries, etc.","Length":"custom made","Features":"Calendar, notebook, various books","Wire diameter":"customizable","Binding way":"by Single loop forming spiral&binding machine","inventory":"1000pcs","Number of turns":"Can be cut into any number of teeth"}}

{"cid":"91195494","title":"Electroplated Gold Metal Steel Single Loop Spiral Coil","imgUrl":"https:\/\/img.ismap.com\/nimg\/24\/5f\/37217792d6c30df6bde1d0f1b211-200x200-1.jpg","attrs":{"Price":"Negotiate","Brand Name":"NanBo","Model Number":"1\/4\" ---2\"","Minimum Order Quantity":"black and white 100pcs other color 1000pcs","Delivery Time":"10-15days","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union, MoneyGram","Supply Ability":"10000000pcs per month","Packaging Details":"5000pcs per carton","Keywords":"Metal Spiral Loop Coil","Material":"Metal Steel","Size":"1\/4\" 5\/16\" 3\/8\" 7\/16\" 1\/2\" 9\/16\" 5\/8\" 3\/4\" 7\/8\" 1\" 1-1\/8\" 1-1\/4\" 1-3\/8\" 1-1\/2\" 1-3\/4\" 2\"","Usage":"binding notebook","Pitch":"2:1 3:1 4:1 5:1 6mm 8mm 10mm","Basic color":"black white","other color":"silver gold,red,blue yellow pink green","Lenght":"A1 A2 A3 A4 A5"}}