Hign-concerned Chemical:None Origin:Mainland China About this item: 1. No matter how rugged mountain roads, the spring mounts to protect your whip light from being broken at the bottom. 2. Quickly release and replace the spring mounts, easy to install. 3. High carbon steel material, up to 8000 KG/MM2 compressive strength. 4. Pot-belly style barrel spring increases flexibility and durability and strengthens the middle part to avoid fracture. 5. High performance of Anti-vibration, Anti-Rust, Anti-corrosion, and Anti-fracture, 5years warranty. 6. Only fit for self adaptations tell ball design that is a quick lift & pulls base.(contact us to confirm the compliance). Specification: Model: Spring Mount Base Color: Black Surface Finish: Powder Coat Finish Material of Spring: High carbon steel wire SWPB Material of Housing: Aluminum Alloy TEC G Value: 800kg/MM2 Diameter of Spring:7MM Spring Turns:9 Mount Way: Quick Lift/Pull Fits: 2FT 3FT 4FT 5FT 6FT LED whip light Package Included: 2pcs Spring Mounting Bracket Base Accessory set