zinc alloy hook spring pendant tri-color plastic spring coil factory direct Rohs conformity Zinc Alloy Hook Spring PendantROHS conformityParts(1)zinc alloy hook(2)metal ring(3)plastic spring coilMaterial metalPUColor TRI-COLORSpecificationsize:38*13mmouter dia:24mmwire dia:2.7mm+/-0.1mmouter dia:10.4mm+/-0.2mmcircumference:50mm+/-5mmRemark