Is a professional supplier of various hardware products. There are a variety of different sizes and different colors of mold springs in the store. Each color represents a different load-bearing load and is suitable for different occasions. We believe that higher quality and lower cost can help our customers save time and money. Please confirm the product size when purchasing. Mold springs are harder than regular springs, which helps your 3D printer be more stable when printing.Generally speaking, there are yellow, blue, red, green, brown springs sorted by different load,die spring is the YELLOW one, which is the lightest load one.Yellow means the load level islighter load;Blue means the load level is light load;Red means the load level is middle load;Green means the load level is heavy load;Brown means the load level is overweight load.Unscrew the adjustment knobs from the bottom of your print bed.And replace those stock springs with these new ones.Screw the adjustment knobs back into the print bed with these new springs.Then you're free to go! Level your bed and keep on printing.These springs may seem trivial, but the springs used on 3D printers can improve print quality and stability. Rectangular Section, strong, keeps print bed level better. The heatbed springs are well suited for high stress applications, but also suitable for various of other applications. Compatible with most 3D Printer Bed. QUICK AND EASY INSTALLATION Die Spring Outstanding Performance Application Feature 【MATERIAL】- The Compression mould die spring is made of spring steel, and the surface is painted, so there is more durable and can be reused many times 【SIZE】- Hole Diameter (Outer Diameter): 16mm/0.63 ; Inner Diameter (Tolerance +1mm/-0.5mm): 8mm/0.31 ; Free Length: 75mm/2.95 (+/- 2mm) 【APPLICATION】- 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, as well as various springs and other applications 【FEATURE】- Mold springs adopt closed design, rectangular cross-section, and harder than ordinary springs; They have the characteristics of small size and high precision Please determine your needs and choose the right size. Department Unisex Adult Item Weight 1.76 ounces Manufacturer ONwngXW Item model number ONwngXW Package Dimensions 1.18 x 0.79 x 0.39 inches