Best Overall
GEARWRENCH 35720 20-Piece Set
- Weight
- 5.5 lb
- Box End
- 12-point, pass-thru
- Swing Arc
- 5° (72 teeth)
- Size Coverage
- SAE 1/4–3/4 in, metric 6–18 mm
Pros
- Covers SAE and metric in one 20-piece set
- 5-degree arc from a 72-tooth box end
- Pass-thru head works down long threaded rod
- Thin head and beam reach confined areas
Cons
- No case or roll included
Half the fasteners on a modern car are metric and the other half are whatever the parts supplier had that day, which is why a set covering both standards earns the default spot. GearWrench's 35720 gives you twenty wrenches — ten SAE from 1/4 to 3/4 inch, ten metric from 6 to 18 mm — and we think that breadth is worth more than any single feature on this list.
What sits underneath the coverage is a good ratchet. The 72-tooth box end needs 5 degrees of swing, which is the difference between moving a nut and not moving it when there's a bracket two inches away. The head and beam are slim, and the pass-thru box end slides down any length of threaded rod, so a nut buried on a long stud turns into a job rather than a saga.
Off-corner loading is the other design detail we appreciate. The 12-point box end grips the flats of a fastener rather than its corners, which matters on the second or third removal, when the corners have already started to round. The polished finish wipes down easily and the sizes are stamped at both ends of the beam, so identifying one in a drawer takes a glance rather than a lens.
The ratchet is the part that decides how long any of these lasts, and a 3/4-inch box end asked to crack a rusted bolt is doing work no ratcheting mechanism was designed for. Break the fastener loose with a plain wrench or a breaker bar first, then let the ratchet run the thread; that habit is worth more than any warranty claim.
Bottom line: We recommend this set to anyone whose work crosses both fastener standards — twenty wrenches, a 5-degree arc, and a pass-thru box end make it the most useful default here.
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