Remote Control Battery Spring (HPD2013017) Hiproda Hardware Products Co., Ltd. Base Info Model NO.:HPD2013017Material:Stainless SteelUsage:Multi-FunctionLoad Type:CompressionShape:SpiralTrademark:HiprodaSpecification:ISO9001, ROHS, SGSOrigin:Shenzhen Description Pre:Antenna Spring, Torsion Spring (HPD2013014) Next:Single & Double Toy Torsion Spring (HPD201321)