Upgraded Aluminum Hand Twist Level Nut. These are compatible with Ender 3/3 Pro/3 V2, Ender 5/5 Plus/5 Pro, CR-10, CR-10 V2, CR-10 V3, CR 10, CR-10 Mini, CR-10S, CR 10S Pro,CR-10 Plus, CR-X, CR 20.
Made by high quality aluminum, last much longer than plastic nuts.The torque of these nuts is large, making it easier to fine tune the hot bed.Metal nut is more powerful and will twist more tightly than plastic nuts.
M4X35 screws for hot bed. NOTE: the length of screws is 35mm, if your printer hot bed screws are 40mm, please adjust the hot bed lower and leveling again to print.
NOTE: The springs are around 25mm long, which is longer than ender 3 and ender 3 pro printer springs. You can use a tool to cut it to be shorter if you really like this product or adjust the hot bed to be higher to fit the springs.

What's in the box
4 x Red Big Hand Twist Leveling Nut
4 x Yellow Spring
4 x M4x45mm Screw