uxcell Extension Spring 2.5mm Wire Dia 18mm OD Free Length Spring Steel Small Dual Hook Tension Spring

Made of manganese steel material,with highly abrasion resistance,durable to use. Tension spring can be used in many occasions, such as production and assembly, experiment, research and development, maintenance,etc.? The Extension Springs give resistance to a pulling force and become longer under load, applications include balance scales,garage doors,washing machines,oven door and applications which requiring various types of tensioning devices.