Check the listing for details. 3D Printer Compression Springs 8mm x 20mm Light Load Die Spring Blue 6Pack. Condition: New. Listed at 14.56 USD. What is this?3D Printer compression springs are mainly used for 3D printer heat beds, are for most 3D printers, widely used in home and officeWhat will I get?3D printers die spring, we provide here, are in the size of:Material: MetalColor:BlueSize: 4 x 8 x 20 mm / 0.16 x 0.31 x 0.79 inch (ID x OD x H)In the package of: 6 Pack x 3D Printers SpringIs there any advantages of the product?The heat bed springs are made of good metal materials, it is more durable than ordinary springs and has a longer service life. Keep your 3D printers stable at workHow to use it?Remove the old compression spring on the machine tool of the 3D printer heat beds and install the new die springWhat should I notice?Please pay attention to the size you need before buying. All size above is measured by manual, please allow +/-0.1 inch error.