The Festool 5'' Sanding Disc Systainer3 provides a neat, portable storage solution for three types of sandpaper: 5'' discs, 80x133mm rectangular sheets and 100x125mm delta sheets. The 5 spaces in the divided liner are specially shaped to cradle all three sizes. Systainer3 is backwards compatible with Classic and T-Loc Systainers and seamlessly connects to CT Dust Extractors. Stack the Sanding Disc Systainer3 with the Systainer that comes with your Festool Sander for neat, all-inclusive storage specific to sanding. Thanks to the T-Loc interlocking latch system you won't need to unstack the sanding discs to access the sander, maximizing efficiency. Systainer3 units have a folding handle in the center for easy carrying. Made of durable, high-quality ABS.