Nickel Lock Spring 1.OEM springs 2.made of various steel 3.ISO RoHS compliance 4.wire Dia:0.1-5.0mm ... supply Nickel Lock Spring The products in our company are ... steel,alloy steel,music wireWire dia0.1-5.0mmDimensionCustomizedSurface TreatmentZinc,Nickel,Silver,Golden,Tin,Powder coatingCapacityOEM, Our companyCertificateISO9001,ISO14001,GP, ...