This is a hand sanding block designed for detail sanding, touch-ups, and repair work in areas a random orbit sander can't reach. The Festool HSK-Duo Dual-Sided Hand Sanding Block, 80x133 (model HSK-Duo 80x133) gives you two working surfaces in one tool: a hard foam side and a soft foam side, so you're not switching blocks every time the job changes from flat panel work to a rounded edge or profile.

The hard side is built for control. Press it against a flat surface or an edge and it holds its shape, which keeps corners crisp instead of rounding them over the way a fully soft pad can. Flip to the soft side for curves, mouldings, and profiles, and the foam flexes to follow the contour instead of bridging over it and missing the low spots. Having both in one block means you can move between flat and shaped work on the same piece without reaching for a second tool.

Both sides use a hook-and-loop interface, so abrasive sheets attach securely and pull off just as easily. That's what makes fast grit changes possible — go from a coarse sheet to a fine one in seconds, with no adhesive residue to scrape off between changes. Sized for 80x133mm abrasives, the block is compatible with Festool Granat, Granat Net, and Rubin abrasive lines.

Paired specifically with Granat Net abrasives, this block helps manage dust even during fully manual sanding — the net-style abrasive captures dust within itself rather than letting it all become airborne, which matters in a finished space where you can't just run a shop vacuum. The block ships with five sheets of Granat Net abrasive to get started: two P80, two P120, and one P180, covering a rough-to-fine progression for a typical repair job.

Made in Switzerland and built to be reused indefinitely — the block itself doesn't wear out, only the abrasive does — this is the right tool for cabinetmakers, finish carpenters, and refinishers doing touch-up work, edge easing, or detail sanding on profiles and corners where a power sander is the wrong tool for the job.

The Sanding Block That Actually Adapts

The Festool HSK-Duo Dual-Sided Hand Sanding Block covers flat work and shaped work with the same tool, so you're not digging through the shop for a different block every time the surface changes.

• Who it's for: Anyone doing hand-sanding touch-ups, repairs, or detail work on edges, curves, and profiles that power sanders can't reach.
• Why it stands out: Hard and soft foam sides in one block, double-sided hook-and-loop for fast grit swaps, and it actually helps control dust when paired with Granat Net abrasives — even with no vacuum running.
• Worth knowing: It ships with five Granat Net sheets to get you started (P80, P120, P180), but you'll want to restock those abrasives separately once they're used up — the block itself is built to be reused for years.

• What abrasive size does this use? 80x133mm Granat, Granat Net, or Rubin abrasives.
• What grits come included? Two sheets of P80, two sheets of P120, and one sheet of P180 Granat Net abrasive.
• Can I use this without a dust extractor? Yes. Paired with Granat Net abrasives, dust gets captured within the abrasive itself, which helps control dust even without a vacuum hooked up.