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Kobalt 20-Piece Standard (SAE) and Metric Combination Ratchet Wrench Set

Amazon's Choice#422 in Wrench Sets
$90.01

Priced as of May 22, 2026

4.7(273 ratings)Buy on Amazon

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CarCareTruth's Analysis

Last reviewed May 26, 2026

TL;DR A 20-piece dual-standard combination ratchet wrench set with a 90-tooth mechanism — 4° arc swing per advance, confirmed from manufacturer spec. Covers the full SAE range (1/4–3/4 in) and full metric range (6–18 mm) in one set. Chrome-vanadium steel with polished finish; Kobalt lifetime warranty confirmed honored at brand level across Amazon reviews spanning 2019–2026. 4.7★ across 273 reviews; Amazon's Choice in Wrench Sets.

What it is and how it performs

A 20-piece set of combination ratchet wrenches — each wrench has a standard open end on one side and a 90-tooth ratcheting 12-point box end on the other. The 90-tooth mechanism produces 4° of arc swing per advance, stated explicitly in the manufacturer feature bullet. Ten SAE wrenches cover 1/4 through 3/4 inch; ten metric wrenches cover 6 through 18 mm. Steel is chrome-vanadium confirmed from the listing specification field. Handles are polished Cr-V steel with no rubberized grip sleeve. No extension bars — this is a wrench format, not a socket-drive set; extension bars are not applicable. 4.7★ across 273 verified-purchase Amazon reviews with a review span from 2019 through 2026; no mechanism failure reports documented in the available review sample.

Who should buy this — and who should skip it

The right pick for a home mechanic or car owner who works on both domestic and imported vehicles and wants a single ratcheting wrench set that covers the full size range for both measurement standards without needing to swap between two sets. The 90-tooth mechanism and 4° arc swing make this usable in tight engine-bay and undercarriage spaces where a standard open-end wrench cannot turn continuously. Skip this if the primary need is a socket ratchet with interchangeable sockets and extension bars for deep-reach work — a dedicated 3/8- or 1/2-inch drive socket set handles that use case. Also skip if a flex-head ratcheting wrench is needed for angled access; this set uses fixed-head geometry only.

Safety and environmental impact

Chrome-vanadium steel hand tool — no chemical exposure pathway; no SDS. Chrome-vanadium steel is fully recyclable through standard metal recycling at end of life. The rail-style molded holder keeps wrenches separated and prevents contact wear between tools during storage. Any chemical products used alongside these wrenches — penetrating oil, thread locker, lubricant — carry their own hazard profiles; check the individual product page for PPE guidance on those products.

Frequently asked questions

How many teeth does the Kobalt ratchet wrench mechanism have?

90 teeth — confirmed from the manufacturer feature bullet: '90-tooth ratcheting end provides 4° of arc swing.' 90 teeth means the ratcheting box end needs only 4° of handle movement to advance one tooth, which is the key specification for tight-space work where hand-swing clearance is limited.

Does this Kobalt set include both SAE and metric wrenches?

Yes. The 20-piece set includes 10 SAE wrenches (1/4, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4 inch) and 10 metric wrenches (6, 8, 10, 12, 13, 14, 15, 16, 17, and 18 mm). Both standards are covered in a single set.

Is the Kobalt ratchet wrench set covered by a lifetime warranty?

Yes. Kobalt brand hand tools carry a lifetime warranty honored through Lowe's stores. Community evidence confirms the warranty has been honored at the brand level for hand tools generally; ASIN-specific warranty claim reports for this exact model are not documented in the available evidence base.

What is the difference between a ratchet wrench set and a socket ratchet set?

A ratchet wrench set (this product) uses combination wrenches with a ratcheting box end — one end is an open-end wrench, the other is a 12-point ratcheting box end. The wrenches are fixed to a specific size and do not use interchangeable sockets. A socket ratchet set uses a ratchet handle with interchangeable sockets on a drive square (1/4, 3/8, or 1/2 inch). Both use a ratcheting mechanism, but they serve different tasks.

Does the Kobalt ratchet wrench set include extension bars?

No. Extension bars are not part of a combination ratchet wrench set — this product format does not use socket drive extensions. The set includes 20 combination ratchet wrenches and a rail-style molded holder.

From the manufacturer

Marketing copy from Kobalt, via Amazon. Not editorial.

  • This 20 piece ratcheting wrench set includes the following metric and SAE sizes: 6, 8, 10, 12, 13, 14, 15, 16, 17, 18 mm and 1/4, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16 and 3/4-inch
  • 12-point box end allows work on 6-point, 12-point, square, star and some rounded fasteners
  • 90-tooth ratcheting end provides 4° of arc swing

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Manufacturer videos

Manufacturer specifications
Color
Silver
Brand
Kobalt
Material
Chrome Vanadium Steel
Item Weight
2.49 Kilograms
Item Package Quantity
1
Head Style
Box End
Operation Mode
Mechanical
Is Racheting
Yes
Is Non Sparking
No
Point Count
12
End Style
Combination
Measurement Standard
Both (Dual)

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