long flexible springs 1.Steel wire diameter from 0.5mm to 20mm 2.Compression and No deformation 3.Good elasticity long flexible springs 1.Steel wire diameter from 0.5mm to 20mm2.Compression and No deformation 3.Good elasticity4.Applications: Automotive, medical device, electronics, toy etc.5.Surface treatment:Zinc,Nickel,silver,golden,tin,powder coating. long flexible springs