Expansion Spring Wire Dia 1.5-1.8mm Tension Extension Expanding Extending Spring Product Information: Model: Spring Hook Extension Tension Spring Material: Springs Steel Surface Treatment: Galvanized Wire diameter: 1.5mm /1.6mm /1.8mm Outer diameter : 15mm - 20mm Length : 40mm - 340mm Note: due to the differences in shooting scenes and technology, there will be a chromatic aberration between the photos and actual colors. Specifications: wire diameter d * outer diameter D * total length L (mm) For example:1.5*16*100mm means: wire diameter 1.5mm (steel wire thickness) * diameter 16mm (spring outer diameter) * length 100mm (total length)
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