Specifications Material: ABS plastic and metal Size: as shown Weight: 70g Package includes: 4*hand twist leveling nut 4*screw 4*hot bed spring Universal Manual Leveling Nut: Designed with exact dimension-15*10*2cm. Our 3D printer hand spin upgrade nuts are compatible with most 3D printers on the market, such as Creality CR-10/10S, CR-10 Mini, CR-X, CR-20, Ender 3, Ender 3 Pro, Ender 5, etc. Easy to Level: Made of high quality ABS plastic materials, this nut has excellent strength and durability features and a wide temperature tolerance range, which makes it easy to level the hot bed. The torque of these nuts is large, making it easy to fine-tune the hot bed. A great way to upgrade your 3D printer with lower prices. Stable Compression Springs: The compression springs are reinforced to enjoy higher elasticity, not easy to deform in due to high pressure processing, stiffer than conventional springs. All these factors contribute to a high stability during printing. The leveling makes it easier to level the bed, so you don't have to worry about the difficulty of leveling the bed after washing it. Installation in 1 minute: If you are tired of spending too much time on fancy installation, our product must be a must-have option for you, because it only takes 1 minute to install. No additional tools or techniques are required. Convenient to level without occupying any effective molding space of your printer. Professional 3D Printer Accessories Kit: We provide you with 3D printer hardware kit to satisfy your demands, which Contains 4 manual leveling nuts, 4 screws and 4 compression springs, sufficient to replace the old or broken one. Besides, each accessory is designed with professional conformation, able to withstand high hardness, ideal for long time use.