About this item 【Larger Build Volume & 180mm/s Fast Printing】 Longer LK5 Pro 3D printer has a large build volume of 11.8 x 11.8x 15.7in. / 300*300*400mm, a larger creation space to meet more of your 3D printing needs. Featured with a printing speed of 180mm/s that is faster than the industry standard. 【Stable Structure & Higher Precision】 The printer uses a reinforced design of diagonal bars to form a stable triangular structure that minimizes vibration and allows for more stable printing. Longer 3D Printer uses lattice glass plate, which not only makes the model easier to disassemble but also makes the hotbed flatter, providing higher-quality prints. 【Ultra-Silent Driver & Open Source Motherboard】 Our 3D printer adopts ultra-silent TMC2208 driver to give you a quiet environment. With the open source firmware, you can try your fantastic ideas on LK5 Pro by changing the G-code. 【Filament Exhaustion Detection & Resume Printing Function】 Longer 3D printer is equipped with filament and power detection sensors, which will intelligently pause the printing process if encountering filament exhaustion or unexpected power failure. It can resume printing from the last printing position when power is restored, saving your time and reducing waste. 【90% Pre-assembled & 100% Satisfaction Service】 The upgraded Longer 3D printer is a 90% pre-installed printer, ferfect for Beginners. We also provide the lifetime technical support and 24 hours professional customer service. If you have any questions during use, please feel free to contact Longer's customer support team.