The Festool 577767 SYS3-COMBI M 337 Systainer is a modular tool storage case built for carrying tools in the top compartment and organizing accessories in a front drawer below. This is a tool storage systainer designed for simple, compact transport of tools and accessories. Model Number 577767. If you want one case that keeps the main tool up top and the screws, anchors, dowels, and small hardware easy to reach underneath, this layout makes a lot of sense.

What separates this Systainer from a standard box is the two-level setup. The upper section gives you room for power tools or hand tools, while the lower drawer works like a built-in organizer for the parts that usually end up loose at the bottom of a case. On the job, that means less wasted time hunting for small parts and fewer extra organizers to pack. The front drawer stays accessible even when the unit is stacked in a Systainer tower, which is one of those details that matters once you are actually working out of the system.

The Festool SYS3-COMBI M 337 is sized to stay portable while still carrying real jobsite gear. Overall dimensions are 15.59 in. x 11.65 in. x 12.99 in., with a top compartment internal size of 15.31 in. x 11.30 in. x 7.48 in. and a drawer internal size of 13.5 in. x 10.66 in. x 2.59 in. That gives you enough room up top for compact tools and enough drawer space below for the hardware that goes with them. The drawer can also be divided with the included partitions, which helps keep fasteners separated instead of mixing everything into one tray.

From a build standpoint, this is designed as part of Festool's larger storage platform, not just a standalone toolbox. It fits the entire Festool Systainer system and is also compatible with all Systainer generations, mobile dust extractors, and many other system accessories. That matters if you already run Festool gear and want your storage to stack, lock together, and move as one unit from shop to van to jobsite. Festool also notes added mobility with the SYS-RB roll board or the SYS-Roll handtruck.

The carrying and stacking numbers are solid for this category. The lid load is rated at 220.4 lbs, the standard load capacity is 44.09 lbs, and the connected load capacity is 88.1 lbs. In plain terms, this is built to handle real use in a stacked system without feeling like a light-duty organizer. At 10.14 lbs, it is not featherweight, but that weight comes with a more robust structure and a format meant to integrate with other storage rather than live on a shelf.

This storage systainer is especially useful for carpenters, installers, remodelers, finish crews, service techs, and serious DIY users who want one grab-and-go case for a tool plus the hardware that supports it. If your work depends on keeping attachments, screws, anchors, and accessories sorted with the tool they belong to, the Festool 577767 SYS3-COMBI M 337 Systainer solves a very specific problem cleanly. It is not the right pick if you only need a basic empty box. It is the right pick if you want organized storage that works as part of the Festool system.

Festool 577767 SYS3-COMBI M 337 Systainer is the smart pick for tool-plus-hardware storage

This is one of those storage pieces that earns its keep fast because it solves a real everyday problem: keeping the tool and the small parts that go with it in one organized case.

• Who it's for: Pros and serious DIY users who want cleaner workshop organization and faster jobsite setup, especially if they already use the Festool Systainer system.
• Why it stands out: The top compartment and front-access drawer combo is more useful than a plain box, and the drawer staying accessible while stacked is the detail that makes it work in the real world.
• Worth knowing: This is an empty storage systainer, not a loaded kit. Its value comes from system fit, organization, and access, so it makes the most sense for users who will actually take advantage of the modular layout.

• What is this product designed to hold? It is designed to carry power tools or hand tools in the top compartment and related accessories or small parts in the lower drawer.
• Can you access the drawer when it is stacked with other Systainers? Yes. The front drawer is designed to remain accessible even in a Systainer tower.
• Does it work with older Festool Systainer setups? Yes. Festool states it is compatible with all Systainer generations, mobile dust extractors, and many other system accessories.
• Can the lower drawer be divided? Yes. The drawer can be organized with the included partitions and is also compatible with select plastic containers.