This Active/Driven Support Shaft Assembly is a replacement component for QIDI BOX. Active Support Shaft Assembly is a roller for supporting the filament spool and also for actively driving the spool to roll. Driven Support Shaft Assembly is a roller for supporting the filament spool. The assembly features a sophisticated gear mechanism that ensures smooth and reliable operation of your printer's drive system. This critical component includes both the support shaft and integrated gearing, working together to maintain optimal performance and print quality. The shaft assembly is constructed with durable materials to withstand the demands of continuous printing operations. Whether you're experiencing wear on your current shaft assembly or keeping backup parts on hand, this replacement component helps minimize downtime and maintains the precision your projects demand. The gear mechanism is precisely calibrated to match QIDI BOX specifications, ensuring seamless integration with your existing printer setup.