Single & Double Toy Torsion Spring (HPD201321) Hiproda Hardware Products Co., Ltd. Base Info Model NO.:HPD201321Material:Stainless SteelUsage:Multi-FunctionLoad Type:TorsionShape:CoilTrademark:HiprodaSpecification:ISO9001: 2008, ROHS, SGS,Origin:Shenzhen Description Pre:Remote Control Battery Spring (HPD2013017) Next:All Styles Earth Clamp