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https://3dprintingzoom.com/product/mxl-cr-10s-s5-3d-printer-diy-kit-upgrade-filament-monitor-with-dual-z-lead-screws-resume-printing-large-printing-size-500x500x500mm/
MXL CR-10S S5 3D Printer DIY Kit Upgrade Filament Monitor with Dual Z Lead Screws Resume Printing Large Printing Size 500x500x500mm