Carbon parts carry a torque figure, and guessing it is the expensive way · review
A chain tool kit with a breaker, a master-link plier with a hook and three pairs of reusable quick links, for 6, 7 and 8-speed chains.
Our conclusion A chain breaker, a master-link plier with a hook, and three pairs of reusable quick links for $11.99 — the one tool combination that lets a chain be removed, cleaned and refitted without a new link each time. Rated for 6, 7 and 8-speed, which covers two of the cassettes on this site and leaves the 10 and 12-speed ones outside it.
A multi-function chain kit for 6, 7 and 8-speed drivetrains: a chain breaker, a link plier with a hook, and three pairs of reusable bicycle buckles — quick links. $11.99.
A chain breaker pushes a pin out of a chain, which is how a chain is shortened to length or removed when it has no quick link. A master-link plier squeezes a quick link’s two halves together or apart — a job that is possible with two pairs of pliers and genuinely awkward. The hook holds the chain’s two ends together while you work, against the derailleur spring that is pulling them apart.
That third one is the tool nobody knows they need until the chain is off.
Three pairs, reusable.
A chain joined by a pressed pin has to be broken to come off, and each breaking weakens the joint. A chain joined by a reusable quick link comes off by hand, goes into a degreaser, and goes back on — which is the difference between a drivetrain that gets cleaned and one that does not. The degreasers page on this site is full of products that assume the chain can be removed.
Of the chains published on this site, the ZONKIE and the SRAM PC-830 include a reusable link; the KMC K1, the Schwinn and the HuGuWdy do not. This kit supplies three pairs for any of them.
| range | |
|---|---|
| This kit | 6, 7, 8-speed |
| Oumers cassette tools, on this page | 8, 9, 10-speed |
They touch at 8 and nowhere else.
Against the cassettes written on this site: the HG50 and HG51 at 8-speed are covered; the HG500-10 and XT M771 at 10-speed are not; the 105 at 12-speed is well outside.
Why a chain tool has a speed rating: the pin pusher and the cradle are sized to the chain’s width and pin length. An 8-speed chain pin is longer than an 11-speed one, and a tool set up for the wide chain can push a narrow chain’s pin out the far side or crush the plates.
So this is a tool for an older or a utility drivetrain — which is also where chains are replaced most often, because they are cheapest.
A quick link is speed-specific: an 8-speed link is wider than a 10 or 11-speed one and will not sit between modern sprockets. Three pairs at 6/7/8-speed are three pairs for an 8-speed chain.
The Schwinn single-speed chain published on this site names its requirement: “this chain works with the Schwinn Chain Tool and other tools for DIY repairs” — which is how it tells you it joins with a pin and has no quick link.
This is one of those other tools, at $11.99, and it comes with the quick links that would have made the breaker unnecessary.
No pin diameter or length range, which is the real compatibility figure behind “6/7/8 speed”; no material; no weight; no dimensions; and nothing about whether the breaker handles a 1/8” single-speed chain, which is wider than any derailleur chain and the kind this site publishes four of.
“Reusable” is stated of the buckles and not quantified — a quick link is usually rated for a handful of openings, and this listing gives no number.
Read on the day this page was built: $12 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-06. The live price is at the top of the page.
| Contents | Chain breaker, link plier with hook, 3 pairs of reusable links |
|---|---|
| Chain range | 6, 7 and 8-speed |
| Quick links | 3 pairs, reusable |
| Hook | Holds the chain ends against the derailleur spring |
| Price | $11.99 |
| Single-speed 1/8" chains | Not addressed |
| Pin dimensions | Not published |
| Material | Not published |
| Weight | Not published |
| Quick-link reuse count | Not published |
| Amazon reference | B097SNNZQF |
| EAN | 0765063723951 |
Holding the chain together. When a chain is split, the rear derailleur spring pulls the two ends apart — so joining them means fighting that spring with both hands already full. A chain hook clips the ends together and takes the tension while the quick link goes in. It is the tool nobody realizes they need until the chain is off the bike, and no multi-tool published on this shelf includes one.
It is rated for 6, 7 and 8-speed, and the reason is physical: the pin pusher and cradle are sized to the chain’s width and pin length. An 8-speed pin is longer than a 10-speed one, so a tool set for the wide chain can push a narrow pin out the far side or crush the plates. For a 10-speed chain, use a tool rated for it — and note the quick links supplied here are 8-speed links too.
Because they make the chain removable. A chain joined by a pressed pin has to be broken to come off, and each breaking weakens that joint; a chain joined by a reusable link comes off by hand, goes into a degreaser and goes back on. That is the difference between a drivetrain that actually gets cleaned and one that gets sprayed. Three pairs are included here, and of the chains published on this site only the ZONKIE and the SRAM PC-830 come with one.
An older or utility drivetrain at 6, 7 or 8 speeds, cleaned properly
Amazon reports what buyers took in the month before this page was last checked: at least 1,000.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for bike gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
16 functions · hex 2–6 mm (0.08 to 0.24 in) · sockets 8/9/10 mm · 205 g (7.2 oz) · 90 × 44 × 25 mm (3.54 × 1.73 × 0.98 in)
The best-selling tool here: a folding 16-in-1 multi-tool with hex keys from 2 to 6 mm (0.08 to 0.24 in), three socket sizes and a screwdriver, at 205 g (7.2 oz).
Best for: The roadside tool to keep in a saddle bag, at the price of a set of brake pads.
16 functions · hex 2–6 mm (0.08 to 0.24 in) · sockets 8/9/10 · CrV steel · 305 g (10.8 oz)
A 16-in-1 folding tool in chrome vanadium steel, with the same hex and socket range as the best-seller here but a harder alloy and more weight.
Best for: Riders who would rather carry an extra hundred grams than round off a seized bolt.
5–25 Nm · ±4% · aluminum alloy · 30 bits, 12 sockets, case
A 1/4 inch torque wrench covering 5 to 25 Nm at a stated ±4%, in an aluminum alloy body, supplied with thirty bits and twelve sockets in a case.
Best for: A first torque wrench where the bit and socket collection matters as much as the wrench itself.
