Rank #7 in Best Circular Saw 2026: 10 Ranked, and Why the Page Price Isn't What You Pay
Bosch Professional GKS 18V-51 Brushless Circular Saw
Price and rating as shown on Amazon when we collected them. Both change.
The Bosch Professional GKS 18V-51 is the saw at number 7 in this guide. It is an 18V cordless circular saw with a brushless motor and a 140mm blade, listed at £84.98, with 4.4 out of 5 from 312 ratings. Bosch files it under the Professional 18V System, model number 06019M3120, and quotes 2 kg for the tool.
The price is the first thing to check against the box contents. The listing's Included Components reads "GKS 18V-51, 1x Saw blade (140mm)" — a saw and a blade, with no battery and no charger named anywhere in the scope of supply. That puts it in the same position as the £85 Bosch UniversalCirc 18V-53 flagged earlier in this guide: the cheapest-looking Bosch here is a bare tool. Two other numbers on the same page do not sit neatly together either. The star histogram adds up to 100 votes, not 312, and those 100 votes average 4.5 rather than the 4.4 shown as the headline rating. The Cutting Angle spec is given as "90 Degrees" with no bevel range stated next to it. Every figure on this page comes from the Amazon listing, not from a test we ran.
How those 312 ratings break down
An average hides its own shape. This is the spread behind the 4.4 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £84.98 |
|---|---|
| Rating | 4.4 out of 5 from 312 ratings |
| Voltage | 18 Volts |
| Motor | Brushless (listed under "Other Special Features of the Product") |
| Blade | 140mm, 24 teeth, carbide, supplied Eco for Wood 140mm x 1.8/1.1 x 20 mm |
| Weight and size | 2 kg; 32.5L x 16W x 15.8H centimetres |
| Included components | GKS 18V-51 and 1x 140mm saw blade — no battery and no charger listed |
| Cutting angle | 90 Degrees (as listed; no bevel range given) |
| Votes shown on the page | 100 total: 74 five-star, 13 four-star, 5 three-star, 1 two-star, 7 one-star |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“great piece of kit not too heavy”
Verified purchase“The saw looks good not use it yet because I'm waiting for the adapter for the saw so I can use it with other batteries 👍tried bosch skill saw gks and it work's great very happy with it👌👌👌👏😀”
What it is up against
The rivals it was ranked against in Best Circular Saw 2026: 10 Ranked, and Why the Page Price Isn't What You Pay.
Questions people ask
Does the Bosch GKS 18V-51 come with a battery and charger?
The listing's Included Components names the GKS 18V-51 and 1x 140mm saw blade only. No battery and no charger appear in the scope of supply, so the £84.98 buys the tool and its blade, and you supply the 18V battery and charger yourself.
What blade does it take?
The supplied blade is Bosch's Eco for Wood, 140mm x 1.8/1.1 x 20 mm, 30, with 24 teeth and a carbide blade material.
How heavy is the Bosch GKS 18V-51?
The listing gives item weight as 2 kg and item dimensions as 32.5 x 16 x 15.8 centimetres, with a plastic handle.
What motor and voltage does it use?
18 volts, with a brushless motor listed under "Other Special Features of the Product".
What rating does the GKS 18V-51 have?
4.4 out of 5 from 312 ratings. The star histogram on the page adds up to 100 votes — 74 five-star, 13 four-star, 5 three-star, 1 two-star and 7 one-star — which is fewer than the 312 ratings quoted, and those 100 votes average 4.5 rather than 4.4.
Can I use batteries I already own?
The listing does not say. One reviewer mentions waiting for an adapter to run the saw on other batteries, so check compatibility with the Bosch Professional 18V System before buying if you are not starting from that platform.
Does it bevel?
The only angle given is "Cutting Angle: 90 Degrees". No bevel range is stated in the specification, so the listing does not tell you whether the base tilts.
Comments
Reader comments are not checked against the manufacturer's claims above.
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