Release Spring Compressed Spring Pressure Spring Return Spring Wire Diameter 1mm, Outer Diameter 20mm mechanical springProduct Parameters Product Name:Compression SpringProduct Materials:65MN Spring steelSurface Treatment:UntreatedProduct Size: Wire diameter (1mm) * Outside diameter (20mm) * Height (10-50mm)Product Quantity: 10PcsProduct Feature: This product is made of high hardness 65mn spring steel, which is hard to deform, uniform spacing, uniform force, fatigue resistance, high temperature resistance, suitable for various places.Product Photos Spot List NOTE: 1. Only the sizes in the spot list can be shipped on the same day. Large quantities are more favorable, and welcome to consult.2. If the size you need is not in the spot list, we can provide customized service. We can produce springs of any shape and size. Welcome to map customization.3. Large spring factory with guaranteed quality and first-class service.Wire Diameter: 1.0mm (Size: Wire Diameter * Outside diameter * Height, Units: mm) Free shipping is General logistics route: (Cainiao Super Economy)