Compatibility: This close-loop motors kit is designed as a new upgrade part for the PROVerXL 4030 V1 Extent to 6060 Version. For users with other 4030 extended versions or the PROVerXL 4030 V2, as well as those utilizing other brand machines and seeking to upgrade, please first contact our support team for further details. Enhanced Precision: Achieve ±0.05mm accuracy with this close-loop stepper motors upgrade kit, ensuring precise positioning and stability for high-accuracy applications like engraving and milling. Increased Efficiency: Boost your productivity with smoother operation and faster speeds of up to 10000mm/min. The closed-loop system prevents step loss and blocking, enhancing efficiency and reliability for woodworking and other projects, saving you time and effort while achieving exceptional results. Superior Torque: With a holding torque of 3.5N·m, our close loop stepper motors offer a 75% increase over original stepper motors, providing ample power for continuous operation at 100% load across a wide range of speeds. New Design Controller Box: Built with a sturdy chassis and featuring eccentric nut adjustment for greater flexibility and control, it ensures long-lasting and reliable performance with minimal maintenance requirements, enhancing your machine's lifespan and productivity. Operate effortlessly via USB interface using GRBL-based control board, compatible with popular software like Candle and Universal Gcode Sender., Manufacturer: Genmitsu