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This product uses the tension of a constant-force spring to counterbalance the overall weight of the X-axis
Quantity: 
Y-axis upgrade kit: Upgrades the Y-axis from dual V-slot wheels to a linear rail system
X-axis upgrade guide rail kit : Including a set of  
Ender 3 S1 Plus
Ender 3 Series Product Upgraded Dual Z-Axis Synchronous Belt Kit Size:Dual Z-Axis Synchronous Belt This product uses the tensionThis product is suitable for the Z axis upgrade of Ender 3, Ender 3 Pro, Ender 3 V2, Ender 3 NEO, and Ender 3 V2 NEO. There are slight differences in the installation of copper columns for Ender 3 NEO and Ender 3 V2 NEO. Ender 3 and Ender 3 NEO require different methods to secure the power supply. Product Features: Upgrades the machine from the original single rod drive to dual synchronous belt drive. Issues it can address: 1. Inconsistent height on
US$ 17.99
US$ 200.00