Astro Tools 78344M 10pc 3/8" Drive Mid-Length Pinless Universal Impact Sockets - Metric

Great medium-sized swivel sockets. Well-built and have stood up to the daily use I have put them through at an automotive repair shop. Since returning to the auto industry, I have bought several sets of sockets from Astro and I have been impressed with the quality. Plus, they are so much cheaper than the tool truck brands.

I recently completed a full front suspension job at home—inner and outer tie rods, brakes, struts, rotors, hubs, lower control arm, bushings, stabilizer bar, sway bar links, and more. For most of that work, I relied heavily on Astro swivel sockets, and they absolutely delivered. I originally used their 3/8” swivel sockets extensively with a high-torque 3/8” impact producing 500+ ft-lbs, and I did not go easy on them. After the job, the sockets still looked nearly new. The swivel action remained tight and controlled, holding position like OEM-quality tools. Compared to big-truck brands, these are easily a fraction of the price with no noticeable sacrifice in performance. Since then, I also purchased Astro’s new 1/2” drive mid-length pinless swivel socket set, and I’m equally impressed. The mid-length design is a perfect balance—long enough for access but compact enough for tight spaces. The pinless universal joint is smooth, strong, and confidence-inspiring, especially under impact use. The deeper hex engagement and clear, laser-etched + stamped size markings make these very practical for daily or heavy weekend use. They feel purpose-built for real suspension and drivetrain work. Important Update on the 3/8” Mid-Length Version Astro revised the 3/8” mid-length swivel sockets in September 2025 (newer version) after reports of failures related to additional weight. The updated version now includes: • A new retaining ring design • An improved ball swivel groove to prevent snapping Astro clearly listened to feedback and addressed the issue properly. The YouTuber EZtechJoe has more detailed technical information, as Astro contacted him directly regarding the revision. Because of this update, I’m now planning to purchase the new revised 3/8” mid-length swivel sockets as well. No Issues with Shallow Sockets For clarity, I’ve been using Astro’s 3/8” shallow swivel sockets for over a year with zero issues. They performed exceptionally well and were rated among the top 3/8” swivel sockets on the Torque Test Channel, which matches my real-world experience. Final Thoughts Astro continues to prove they offer excellent value, smart engineering, and real durability. These sockets work flawlessly in ratchets and impacts, fit where they need to, and hold up to serious torque. Between the shallow, mid-length, and revised designs, Astro swivel sockets are now a permanent part of my toolbox. Highly recommended.

Astro Pneumatic makes very good impact sockets. They are much higher quality than their price tag represents. Sockets pivot freely without being too loose and a good selection of sizes. Organizer tray they come on is solid and makes storing them easy.

I just used this set for the first time this week for a trailer hitch install. The sockets used functioned flawlessly, and allowed me the angle of access needed to get to several difficult bolts. I have not yet used them in stressful situations that would test their durability. But appearance and the included socket rack show attention to detail and quality. The joints were appropriately tight to hold the socket in position for this job. Time will tell how they loosen over time, but I am pleased.

Great sockets. Been using them commercially over 6 months and non have broken. The rail they come with is excellent as well. Would buy again if i needed another set.

It was a toss-up between this and the Tekton set. Selected this one due to cost and the warranty. Tekton was just too expensive. Didn't want a "pinned" set and these were the answer. Astro makes good stuff and I saw the torque testing of these on YouTube and they were impressive. Wish it included 8 and 9mm but I'll buy those separate. Come with a nice rail too.

First let me say that these seem very good for the price. However, I don't think they are strong enough for hard use with a quality impact wrench. I used these with a Milwaukee Gen2 stubby impact to remove some cylinder head bolts and exhaust manifold bolts. It was the first time I had used the socket. I noticed that it got very hot after the first two or three bolts, and then seem to not transfer torque as well. Upon closer inspection I noticed that the swivel action seemed to be binding up. The bolts were torqued pretty tight, but it didn't seem to me like it should have been enough to push these to their limits. I know Astro has a good warranty, but I'm concerned that I'll be having to warranty these out more often than I would like. I would say they are still the best bang for the buck, but I think the welded pin style that Snap-On and Matco make are superior and will hold up much better. Astro achieves a more compact socket, for a good price by using the pinless design, and I'm sure welding the pin so as to avoid a retention collar would significantly add to the cost, but I bet they could still beat the price by miles when compared to Snap-On and Matco, and I would be willing to pay some more for an Astro welded pin socket. I can say, I have been pleased with all of my Astro tools, but these I think might be the first ones that really don't quite live up to the reputation they have built for durability. They'll do the job for sure, and they cost a fraction of what the tool trucks charge. The are definitely more compact than a pinned socket with a collar like most of the cheaper pinned sockets use. I am a semi-professional technician (meaning I have a regular job in another field, but do a lot of automotive side work and used to have numerous ASE certifications) so I don't use my tools as much as the professional tech. I think that these will work for me but might fall short for a pro.

Strong, good quality. Use with impact gun.

I have used these sockets for long enough now to say they are very durable compared to other brands. These are not the highest quality but would not recommend buying any other swivel sockets in terms of value for money.

Purchased to replace a smaller set with wide collars around the base. These are much narrower and have better access. They pair well with my M12 stubby impact, and have seen daily use at a heavy equipment dealership

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