The Systainer SYS3 TB M 237 is a storage solution from Festool, designed for organizing and transporting tools, accessories, and other materials. Here's what the specifications indicate: SYS3: This is the third generation of the Systainer series, designed for better functionality, durability, and integration with other Systainer systems. TB: This refers to the Tool Box design, which typically features customizable interior configurations to securely store various tools. M: This may indicate a medium size, suitable for a wide range of tools and accessories. 237: Likely refers to the model number or specific size of the Systainer, detailing its dimensions or internal layout. The Systainer SYS3 TB M 237 is commonly used in professional environments, such as carpentry, construction, and workshop settings, where organization and portability are key. The Systainer system is known for its modular design, allowing multiple units to be stacked and securely fastened together for easy transport.