Head to head
Bosch Professional GWS 18V-10 vs Karcher Puzzi 10/1
The Bosch Professional GWS 18V-10 is a 18v cordless 125mm angle grinder. The Karcher Puzzi 10/1 is a compact spray extraction machine for carpet and upholstery cleaning.
Last reviewed 13 September 2026
Specifications side by side
| Bosch Professional GWS 18V-10 | Karcher Puzzi 10/1 | |
|---|---|---|
| Weight | 2.1 kg (excl. battery) | 10.7 kg |
| Disc diameter | 125mm | - |
| No-load speed | 9000 rpm | - |
| Spindle thread | M14 | - |
| Fresh/waste water tank | - | 10 / 9 litres |
| Fan power rating | - | 1250 W |
| Pump power rating | - | 40 W |
Sources: Bosch Professional GWS 18V-10, Karcher Puzzi 10/1. Figures vary by model year and options, so check with the supplier before you commit.
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 →Buy or hire the Puzzi 10/1 if...
The Puzzi 10/1 is a compact carpet and upholstery extraction machine bought or hired by cleaning contractors, letting agents and valeters for small to medium jobs. Its low weight and single-phase plug make it practical for vans and stairs where larger extraction units are impractical.
Full Puzzi 10/1 specifications →Common questions
What is the difference between the Bosch Professional GWS 18V-10 and the Karcher Puzzi 10/1?
The Bosch Professional GWS 18V-10 is a 18V cordless 125mm angle grinder; the Karcher Puzzi 10/1 is a compact spray extraction machine for carpet and upholstery cleaning.
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