Die Spring:compatible with most 3D Printer Bed, Mold springs are mainly used in the mold machinery of injection molding machines, such as 3D printer heated bed, which are very suitable for high-stress applications.
Material : Metal. Color : Blue ; Compression Ratio: Compression Ratio of 1 million times: 0.32; Compression Ratio of 500,000 times: 0.36; Compression Ratio of 300,000 times: 0.4; Maximum Compression Ratio: 0.59.
Advantage:Rectangular Section,strong,the die springs are stiffer than ordinary spring,which help your 3D printer much more stable while printing.