Features: Brand new and high quality Package include:package comes with 4 pieces aluminum hand twist level nuts and 4 pieces yellow die spring, bright colors make you work happily. Upgraded design: made of aluminium alloy, rust and corrosion resistance, metal nut is more powerful and will twist more tightly than plastic nuts, long service life. Size: the twist level nut is approx. 2.36 inch/ 60 mm in diameter and 0.35 inch/ 9mm in thickness, the torque of these nuts is large, making it easier to fine tune the hot bed. Suit for: apply for 3D printer hot bed/ platform, the red nuts are original upgraded replacement part for Ender 3/3 X, Ender 5/5 plus/ 5 pro, CR-10, CR-10 V2, CR-10 max, CR 10, CR-10 mini, CR-10S, CR 10S Pro, CR-10 plus, CR-X, CR 20. Easy to use: convenient installation, easy to level, It does not occupy any effective molding space of your printer. Specifications: Item Type: 3D Printer Accessories Material: Plastic For:Ender 3/Ender 5/5 Plus/Pro CR-10 CR10S/10S Pro CR 20 Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 4 x Hotbed Springs 4 x Nuts