Head to head
Bosch Professional GWS 18V-10 vs Stihl TS 420
The Bosch Professional GWS 18V-10 is a 18v cordless 125mm angle grinder. The Stihl TS 420 is a petrol cut-off machine for 350 mm cutting wheels.
Last reviewed 13 September 2026
Specifications side by side
| Bosch Professional GWS 18V-10 | Stihl TS 420 | |
|---|---|---|
| Weight | 2.1 kg (excl. battery) | 9.8 kg |
| Disc diameter | 125mm | - |
| No-load speed | 9000 rpm | - |
| Spindle thread | M14 | - |
| Displacement | - | 66.7 cm3 |
| Power | - | 3.20 kW |
| Cutting wheel | - | 350 mm |
Sources: Bosch Professional GWS 18V-10, Stihl TS 420. 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 TS 420 if...
A hand-held petrol cut-off saw for cutting concrete, stone, kerbs and pipe. Used by groundworkers, utilities crews and landscapers on road and paving jobs.
Full TS 420 specifications →Common questions
What is the difference between the Bosch Professional GWS 18V-10 and the Stihl TS 420?
The Bosch Professional GWS 18V-10 is a 18V cordless 125mm angle grinder; the Stihl TS 420 is a petrol cut-off machine for 350 mm cutting wheels.
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