Feature 1 Upgrade the horizontal spring of the hot bed to make the 3D printer more precise. 2 Aluminum alloy nuts are more powerful and tighter than plastic nuts, which is very practical. 3 Made of high quality aluminum material, durable and reliable, and it has a long service life. 4 The torque of these nuts is greater, making it easier to fine‑tune the hot bed. 5 Suitable for a variety of models,it suit for Ender 3/3 Pro/3 X, for Ender 5/5 Plus/ 5 Pro for CR10, for CR10 V2, for CR10 Max, for CR 10, for CR10 Mini, for CR10S, for CR 10S Pro, for CR10 Plus, for CRX, for CR 20.Condition: 100% Brand New Item Type: Leveling NutMaterial: Aluminum AlloyColor: Red + BlackDiameter of Red Nut: Approx. 60mm / 2.36in Suitable for Ender 3/3 Pro/3 X, for Ender 5/5 Plus/ 5 Pro for CR10, for CR10 V2, for CR10 Max, for CR 10, for CR10 Mini, for CR10S, for CR 10S Pro, for CR10 Plus, for CRX, for CR 20. Package List4 x Red Nut3 x Long Silica Column1 x Short Silica Column1 x Bracket1 x Bracket Cover