100% Brand New This Product Is Made Of Spring Steel. Spring Steel: Gray Black. Harder. Durable And Cost-effective, No Rust. Packing: One Bag Of One Specification, Not Mixed. (d) Wire Diameter * (D) Outer Diameter * (L) Length Feature: 1. Good Elasticity: Uniform Force, Fatigue Resistance And Full Elasticity. 2. Uniform Pitch: The Pitch Is Uniform, The Curve Is Highlighted, And The Force Is Stable. 3. Good Elasticity: High Plasticity, Good Fatigue Resistance, Uniform Force, Firm Good Solidity And Good Texture.
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