Head to head
Bona FlexiSand 1.9 vs Bosch Professional GWS 18V-10
The Bona FlexiSand 1.9 is a single-disc rotary floor sanding and buffing machine. The Bosch Professional GWS 18V-10 is a 18v cordless 125mm angle grinder.
Last reviewed 13 September 2026
Specifications side by side
| Bona FlexiSand 1.9 | Bosch Professional GWS 18V-10 | |
|---|---|---|
| Disc diameter | 407mm (16in) | 125mm |
| Weight | 50kg (plus optional 11kg magnetic weight) | 2.1 kg (excl. battery) |
| Power | 1.9kW | - |
| Voltage | 230V, 50Hz, 11A | - |
| No-load speed | - | 9000 rpm |
| Spindle thread | - | M14 |
Sources: Bona FlexiSand 1.9, Bosch Professional GWS 18V-10. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the FlexiSand 1.9 if...
A single-disc rotary sander used for buffing, screening and light sanding rather than heavy stock removal, which is why floor contractors keep one alongside a belt or drum sander rather than instead of one. Its 407mm disc and 1.9kW motor put it in the same bracket as other single-phase rotary buffers sold through UK flooring trade counters.
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Buy or hire the GWS 18V-10 if...
The GWS 18V-10 is Bosch's mainstream cordless replacement for a corded 125mm grinder, used for cutting, grinding and deburring on site. It is one of the most widely stocked cordless grinders in the Professional range and is often the reference comparison for rival 125mm cordless grinders.
Full GWS 18V-10 specifications →Common questions
What is the difference between the Bona FlexiSand 1.9 and the Bosch Professional GWS 18V-10?
The Bona FlexiSand 1.9 is a single-disc rotary floor sanding and buffing machine; the Bosch Professional GWS 18V-10 is a 18V cordless 125mm angle grinder.
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