The original replacement drum unit has been developed by experts and is therefore optimally suited for your Brother laser printer. Ensure that your Brother printer continues to deliver outstanding results by choosing the DR-3400 drum unit. While there may be cheaper replacement products available online, only the original DR-3400 drum unit guarantees that your device will remain as fast and efficient as required in the future. Keep in mind that only with Brother's original products can you ensure that your printer continues to function optimally. So, order the original DR-3400 drum unit now, so you can continue to rely on your Brother printer in the future.