rolling door spring box with nylon ball

{"cid":"91224608","title":"Galvanized Steel Unassembled Rolling Door Spring Box With Nylon Ball And Inner Ring","imgUrl":"https:\/\/img.chinax.com\/nimg\/c5\/1c\/805e5a215412eb487d86a40bca9e-200x200-1.jpg","attrs":{"Price":"us0.7~2.1","Brand Name":"XINCHWENGWEI","Model Number":"1-1","Minimum Order Quantity":"Thirty","Delivery Time":"5-15workingday","Certification":"ISO9001","Place of Origin":"CHINA","Payment Terms":"L\/C,D\/A,D\/P,T\/T","Supply Ability":"100000","Packaging Details":"Ten per paper bag","Product Name":"SPRING BOX","Application":"Spring Box for Rolling Shutter Door\/Roller Shutter Door\/Gate","Origin":"Factory Direct","Surface Treatment":"Galvanized Steel","Outer Diameter":"200mm, 220mm, 240mm","Inner Diameter (Tube Diameter)":"43mm, 48mm, 50mm, 60mm, 76mm or custom sizes available","Inner Roller Material":"Nylon Ball and Inner Ring","Packing":"10 pieces per bag","Bag Colors":"Yellow, Blue"}}