Compression Spring factory New design small stainless steel compression spring for umbrella Wire Diameter:0.5mm/0.02"; Outer Diameter: 5mm/0.20"(OD); Free Length: 30mm/1.18" Made of stainless steel material not easy to rust, more durable. Tension spring can be used in many occasions, such as production and assembly, experiment, research and development, maintenance, etc.. Compression springs are open-coil helical springs that are used to save space and absorb shock in a variety of applications. Coil spring is Generally used for spring equipment tools etc. Coil spring is with high elasticity and good precision, installed small size and generate strong force. Product nameCompression spring ModelTL27 Place of OriginGuangdong, China Brand NameLQY StyleCoil Load TypeCompression MaterialStainless Steel, carbon steel wire, piano wire, copper wire UsageIndustrial Wire Diameter0.05~5mm Endurance Limit100000 times OEM serviceAccepted Free SampleAvailable Sample deliveryDuring 7 working days Surface treatmentGalvanized, chrome plate, nickel plate Tolerance0.02-0.1mmCompression Spring factory website:http://www.lanejoy-machining.com/spring/compression-spring/