This 3d printer includes the following upgrades; Micro Swiss all metal direct drive extrusion system with all metal hot end. Cr touch leveling probe. Custom firmware from tinymachines3d.com to allow for more in depth control while leveling and micro adjusting while printing in progress. an overhead light and a retractable draw cable to keep the tool head cable from interfering with the print bed. I have had many successful prints with this beauty and to whomever buys it i hope it dose the same for you i will also include a set of leveling feeler gauges two additional BL touch probes