Craftsman 3/8-in Metric Socket Set, 10-Piece (CMMT34564)
Craftsman's 10-piece 3/8-inch drive metric socket set: nine 6-point sockets from 10 to 18 mm and a thin-head 72-tooth ratchet. A gap-filler or starter set, not a full garage kit.
Quick verdict
Yes, if you need the common 10–18 mm metric sizes in 3/8-inch drive. The Craftsman CMMT34564 pairs nine 6-point sockets with a thin-head 72-tooth ratchet that works in tight engine bays, and Craftsman's page lists a full lifetime warranty. It's metric-only and not impact-rated, so it's a gap-filler or starter set, not a full garage kit.
- Best for:
- Filling a metric 10-18mm socket gap in an existing tool set.
- Watch out:
- Metric only — no SAE sizes included.
Amazon US listing and availability checked October 28, 2026. Prices and stock can change.
Reviewed October 12, 2026 · How we review
Part of our buying guide: Hand Tool Gifts: How to Pick One They'll Use, Not One They Already Own
Our Take
What this set actually is, confirmed against Craftsman's own product page: one 3/8-inch drive 72-tooth ratchet with a low-profile head (Craftsman states roughly 25% thinner than a standard head, with a 5-degree arc swing) plus nine 6-point metric sockets covering 10, 11, 12, 13, 14, 15, 16, 17, and 18 mm. That thin-head, small-swing ratchet detail matters more than it sounds — it's specifically what lets a ratchet turn a bolt in a cramped engine bay or behind a panel where a standard ratchet head can't complete a full swing. This is a narrow, specific tool for that specific job, not an all-purpose kit.
Best For
- Someone who already owns basic hand tools and specifically needs the 10-18mm metric range in 3/8-inch drive
- Working in tight clearances (engine bays, behind panels) where a thin-head, short-arc ratchet is the actual reason to buy this over a generic set
- A starter gift for a new car owner or apprentice mechanic
Skip If
- You need SAE (imperial) sizes — this set is metric-only, nothing above 18mm or below 10mm is included
- You're outfitting a full home garage from scratch and need a broader size range or multiple drive sizes
- You need impact-rated sockets for a power impact wrench — these are hand-ratchet sockets
What We Like
- The 72-tooth, 5-degree-arc, low-profile ratchet head is a genuine, checkable design feature for tight-clearance work, not just marketing language
- A focused 9-socket, single-size-range set is easy to keep organized and quick to inventory, unlike sprawling 200+ piece mega-kits
- 3/8-inch drive with 6-point sockets is the most commonly reached-for combination for everyday automotive and household bolts
What To Know
- This is a metric-only set — confirm you don't also need SAE sizes before buying, especially for older American vehicles that mix both standards
- Craftsman's own product page currently lists a full lifetime warranty on this set — Craftsman has changed corporate ownership more than once over the decades, so this is the warranty as currently published, not an assumption carried over from an older Craftsman guarantee
- 9 sockets covering 10-18mm leaves anything smaller or larger uncovered — check that range against the specific bolts/fasteners you actually work on
Pros
- Thin-head, short-arc ratchet genuinely suited to tight-clearance work
- Focused 10-18mm metric range covers the sizes used most often
- Full lifetime warranty as currently listed by Craftsman
Cons
- Metric only — no SAE sockets included
- 9-socket range (10-18mm) won't cover smaller or larger fasteners
- Not rated for impact wrench use
Alternatives
- A combination metric + SAE mechanics set from the same brand tier — Worth comparing if you don't already own SAE sockets and want one set that covers both standards.
- A larger multi-drive-size mechanics tool kit — Better if this would be your only toolbox rather than a supplement to existing tools.
Why PriceDropIQ Selected It
The 72-tooth low-profile ratchet's specific tight-clearance design is a real, verifiable reason to choose this exact set over a generic equivalent — precisely the kind of product-specific detail that gets lost when a set gets treated as generic 'mechanic's tools.'
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Reviewed October 12, 2026. Check the current offer, seller, availability, and shipping details on Amazon.
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