Specification Brand : HICTOP BulletPoint1 : ender 3 adjustment wheels are more substantial than the cheap black plastic ones. BulletPoint2 : The red color ends some of the fumblings by feel to locate them, 3d printer leveling knobs are nice too, the knurling is nice and grippy and it's pretty easy to turn them too BulletPoint3 : 3d printer bed springs are a bit longer than the one on the printer, which gave you some more adjustment range for leveling. The increased tension means less slop when adjusting. The longer springs mean you will have to manually adjust your zstop so that your nozzle doesn't crash into your bed and potentially ruin both BulletPoint4 : Everything in 3d printer spring and knob kit feels tighter and less wobbly. You do not need to re-leveling near as often. BulletPoint5 : 3d printer spring and knob kit is suitable for Ender 3/3 Pro/3 V2 Ender 5/5 Plus/Pro CR-10 CR10S/10S Pro CR 20 and other Voxelab Sovol 3D Printers BulletPoint6 : 2 Rolls Capacity: Large space dryer box that can store 2 rolls of 1 KG filament or 1 roll of 3 KG filament, and equipped with 10 filament holes and PTFE tubing to accommodate users drying multiple filaments and 2 printers at the same time BulletPoint7 : Brand Service: FIXDRY provides lifelong professional technical support, if you encounter any problems during use, please contact us directly Color : B-Ender 3 V2 Full Hotend Kit CompatibleDevices1 : Laptop CompatibleDevices2 : Smartphone CompatibleMaterial : Plastic CompatibleMaterial1 : Acrylonitrile Butadiene Styrene CompatibleMaterial2 : Polypropylene CompatibleMaterial3 : Acrylonitrile Styrene Acrylate CompatibleMaterial4 : Nylon CompatibleMaterial5 : Plastic ExternallyAssignedProductIdentifier1 : 649910022131 ExternallyAssignedProductIdentifier2 : 0649910022131 ExternallyAssignedProductIdentifier3 : 00816550024843 ItemName : HICTOP Upgraded Metal Leveling Knobs with Hot Bed Springs for Ender 3/3 Pro/3 V2 Ender 5/5 Plus/Pro CR-10 CR10S/10S Pro CR 20 and other Voxelab Sovol 3D Printers ItemPackageDimensions_Height : 8.2 centimeters ItemPackageDimensions_Length : 7.3 centimeters ItemPackageDimensions_Width : 8.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 3d-printer-accessories Manufacturer : HICTOP Material : Metal Material1 : Plastic Material2 : Steel ModelNumber : Metal Leveling Nuts with Hot Bed Springs NumberOfBoxes : 1 NumberOfItems : 8 OperatingSystem : Linux PartNumber : Metal Leveling Nuts with Hot Bed Springs PowerConsumption : 110 watts ProductDescription : About HICTOP Upgraded Metal Leveling Knobs with Hot Bed Springs for Ender 3/3 Pro/3 V2 Ender 5/5 Plus/Pro CR-10 CR10S/10S Pro CR 20 and other Voxelab Sovol 3D Printers Color: Red for the Metal Leveling Nuts and Yellow for the Hot Bed Springs Material: Aluminum length of the springs: 25mm Package Included : 4X Hand Twist Leveling Nut 4X Hot Bed Spring 4X M4*40 Screws