Troodon 2.0 comes in modules, 95% pre-assembled, which is much easier to build than Voron kit, so as to save time and labor for you efficiently. (inspired by Voron design) Note: the printer comes with Stealthburner extruder and TAP leveling sensor as default now. if you choose to ship from China, we will pre-install the SB extruder and TAP sensor for you; if you choose to ship from US or CZ warehouse, we will send you the SB extruder and TAP sensor from China separately, which needs to be upgraded by yourself personally.