Compatible with: These upgraded aluminum hand nuts are upgraded replacement parts for 3/3 Pro/3 V2/3 Max, for 5/5 Plus/ 5 Pro, -10, -10 V2, -10 V3, -10 Max, 10, -10 Mini, -10S, 10S Pro, 10S Pro V2, -10 Plus, -X, 20. Please confirm your printer model before purchasing. High Quality: These Leveling Nuts is made of aluminum alloy metal material, which is stronger than plastic. it twist more tightly than plastic nuts. Easy to Use - The torque of these nuts is large, making it easier to fine-tune the hot bed, and easy to install and remove, make the hotbed glass platform more stable. Color:Red Material:Aluminum Alloy Package Contents: 4 * level nuts 4 * spring 4 * screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.