Product Name: Extension Springs Hardware Auto Parts Motorcycle Springs Model NO.: hld-spring01 Shape: Coil Production Process: Cold Roll Load Type: Extension Usage: Industrial, Auto, Motorcycle Material: Steel Function: Pressed Trademark: Great stregth Transport Package: Carton or Bulk Specification: Unstandard Origin: China HS Code: 7320909000 Product Description Tension springs:Also named Stainless steel extension Spring:The Spring Works specializes in custom extension springs.All are formed on CNC equipment to customer specifications.Extension springs can be manufactured in wire sizes from. 0.2 mm to. 4mmA wide variety of designs and finishes are available to meet your requirements.Regular hooks include both English and German styles, as well as all shapes of extended hooks and loops.