Fast shipping and the product is genuinely excellent. Highly recommend.
Nancy M.
✓ Verified Buyer
Currently out of stock
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The Williams SNP31023 is a 3/8 inch drive locking extension bar, 3 inches.
Locking is the specification and it solves a problem everyone has met and nobody talks about.
A standard extension holds a socket with a spring-loaded ball detent. That detent is a friction fit — it holds the socket well enough for normal work and it lets go under a few specific conditions: pulling the tool off a fastener at an angle, a socket that has gripped a rusty nut tightly, or simple gravity when working overhead.
When it lets go, the socket falls. Into an engine bay, down a frame rail, into a gearbox, into the bottom of a machine — and retrieving it costs half an hour with a magnet and a torch, or it does not get retrieved at all. In aviation and turbine work, a socket that goes somewhere unrecoverable is a foreign object event rather than an inconvenience.
A locking extension has a positive mechanical lock: a collar or a pin that engages the socket and holds it until deliberately released. The socket comes out of the engine bay attached to the tool.
At 3 inches this is the short extension — the one for clearing a shallow obstruction while keeping the ratchet's feel.
Note the source data is minimal. Verify the locking mechanism and finish against Williams' specification.
Not sure this is the right part?
Contact our support team before ordering and we'll help you verify the product details.
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4.63
out of 5 · 27 reviews
Fast shipping and the product is genuinely excellent. Highly recommend.
Nancy M.
✓ Verified Buyer
No real complaints. Works fine and feels well made.
Emily V.
✓ Verified Buyer
Does the job nicely. Packaging could be better but no damage.
Lisa J.
✓ Verified Buyer
Exceeded my expectations. Well worth every penny.
Nancy N.
✓ Verified Buyer
Arrived quickly, packaged well, and works like a charm. Five stars.
Ashley N.
✓ Verified Buyer
Arrived quickly, packaged well, and works like a charm. Five stars.
Robert Y.
✓ Verified Buyer
Quality is good. Does exactly what I bought it for.
Mark X.
✓ Verified Buyer
Arrived quickly, packaged well, and works like a charm. Five stars.
Paul P.
✓ Verified Buyer
Reliable and does what it should. Shipping was a touch slow.
Edward Z.
✓ Verified Buyer
Top quality — feels well built and performs even better than I expected.
Edward L.
✓ Verified Buyer
Fit perfectly and did the job the first time. Couldn't ask for more.
Joseph C.
✓ Verified Buyer
Excellent product and great customer service. Will order again.
Miguel H.
✓ Verified Buyer
Been using this daily for a month with zero issues. Money well spent.
Melissa K.
✓ Verified Buyer
Perfect fit and finish. You can tell it's a quality part.
Michael I.
✓ Verified Buyer
Perfect fit and finish. You can tell it's a quality part.
Matthew C.
✓ Verified Buyer
Solid, reliable, and exactly as described. Very happy with this purchase.
Michelle M.
✓ Verified Buyer
Decent build and it does the job. Happy enough to reorder.
Michelle G.
✓ Verified Buyer
Reliable and does what it should. Shipping was a touch slow.
Matthew S.
✓ Verified Buyer
Genuine OEM quality. Installed in minutes and running perfectly.
Ashley E.
✓ Verified Buyer
No complaints at all — did the job perfectly and feels durable.
Trevor K.
✓ Verified Buyer
Average product. Works, but I expected a bit more.
Richard T.
✓ Verified Buyer
Exceeded my expectations. Well worth every penny.
Hassan W.
✓ Verified Buyer
Impressed with how sturdy this is. Does everything I hoped for.
Jennifer M.
✓ Verified Buyer
Pretty good value. Fit was slightly tight but it went in fine.
Hassan K.
✓ Verified Buyer
Genuine OEM quality. Installed in minutes and running perfectly.
Mary P.
✓ Verified Buyer
Impressed with how sturdy this is. Does everything I hoped for.
Daniel G.
✓ Verified Buyer
Good product. Would have given five stars but the finish had a small mark.
Amanda P.
✓ Verified Buyer
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