Using the Makita 197213 - 3 Interlocking Case is super easy. First, open the lid by releasing the interlocking latches. Then, place your power tools inside the case. You can stack multiple cases on top of each other by aligning the corresponding channels on the lid and base. This ensures they stay stable. To transport the cases, you can use the low - profile, rounded carrying handle for comfort, or the recessed side handles for lifting. When it comes to maintenance, keep the case clean by wiping it with a dry cloth. Avoid using abrasive cleaners as they might damage the case. Also, make sure the interlocking latches are in good condition. If you want to connect it with other compatible modular storage systems like the SP6000J/J1 or Festool® Systainer®, just follow the connection instructions for those systems. And remember, don't overload the case as it might affect its durability.