Die Spring: compatible with most 3D Printer Bed, great Ender 3/2 heat bed springs, flat top and stiffer;
Hole Diameter (OD) : 0.31"/ 8mm; Rod Diameter (Inner Dia): 0.16"/ 4mm; Length: 0.8"/ 20mm
Rectangular Section, strong, keeps print bed level better.
Advantage: the die springs are stiffer than ordinary spring, which help your 3D printer much more stable while printing
Zeelo are devoted to offer premium quality products to all cherished customers. Meanwhile supply 45 days money back guarantee and 18 months warranty.