Description:1. Rectangular section, closed-end design. Die springs are primarily used in die machinery equipment, for plastic injection 3D printer electric part.2. The loading grade of die springs in various colors (from lightest load to extra heavy load): yellow, blue, red, green, brown.3. Made of spring steel material, the surface is blue painted, not easy to rust, more durable.Specification:Product Name: Compression Die SpringLoad Type: Light LoadColor: BlueHole Diameter(Outer Diameter): 20mm/0.79"Inner Diameter (tolerance +0.5mm): 10mm/0.39"Free Length: 90mm/3.54" (+/- 2mm)Max Compression Rate: 40%Maximum Load: 530NMaterial: Spring SteelSurface Treatment: Spray PaintPackage Content: 8pcs x Compression Die Spring
