Astro Tool 78318 Extra-Long Flex Head Nano Socket Ratchet Wrench

Bought this specifically to pair with the Astro nano sockets, and it paid off immediately. Used it on my 2017 Chrysler Pacifica doing an idler pulley. Clearance in that area is tight and awkward. The extra-long handle gave me the leverage I needed, and the flex head let me dial in the exact angle without fighting the frame or other components. Combined with the nano sockets, this setup is money. The low profile plus the slim head design makes it way easier to work in modern engine bays where everything is packed in. It feels solid, not sloppy. The mechanism is smooth and the length actually helps instead of getting in the way. If you work on your own vehicles and run into tight clearance issues often, this ratchet + nano socket combo is worth it. It’s not a gimmick tool — it actually solves a problem. Glad I added it to the drawer.

This Astro 78318 Extra‑Long Flex Head Nano Ratchet is one of those tools you don’t realize you need until you use it—and then it becomes indispensable. If you run Astro or CROM 17mm nano sockets, this ratchet is made for them. The built‑in retaining ring snaps the nano sockets in securely so they stay put until you intentionally remove them. The flex head and extra‑long handle give you the reach and leverage needed for fasteners buried deep in engine bays or tucked behind brackets. Just remember it’s still a 3/8" ratchet, so you can over‑torque it if you’re careless. That said, Astro backs their tools with a lifetime warranty, and they’ve always stood behind their products. The ratchet is made in Taiwan, and the build quality reflects that—tight tolerances, smooth action, and a solid feel. To reverse direction, you flip the ratchet over; the side with the Astro branding is the tightening (ON) side. A small improvement would be an arrow indicating direction, and a bigger upgrade would be a built‑in reversing switch like you see on Gearwrench or Matco nano ratchets. Interestingly, you can give this ratchet that capability: the Matco head assembly repair kit fits this tool, adding a reversing switch. Even after buying both the Astro ratchet and the Matco head, the total cost is still about half the price of the full Matco equivalent. I left my 18" version stock because the 100‑tooth (3.6°) mechanism is excellent, but I did convert the smaller 10.5" version using the Matco kit (which is 72‑tooth). Overall, this is a fantastic long‑reach nano ratchet—strong, smooth, compact, and incredibly useful. I highly recommend it.

I've always used a 17mm ratchet wrench with nano sockets. Now breaking my 3rd sears wrench I decided to try this one and what I love about it is the swivel. so far it's great and can get into tight places better than I thought. My e 400 has bolts 18mm rear 89 ft lbs caliper brackets that you cannot use a socket and this works perfect to break free then use 18mm wrench to remove it. You cannot beat it for the price. Plus you have the extra 17mm wrench for more versatility as its very long. Plus lifetime warranty.

This is such a great tool to have in your toolbox with the nano sockets. It helped in spots where my ratcheting wrenches wouldn't fit. Great quality tool

This is a game changer with the Astro 19pc Low Profile Nano Impact Socket Set! good for hard to reach/fit places. Feels sturdy and great quality.

Great value and very useful. Internal is great for nano sockets and seems to fits the pulleys and tensioners in my Honda without needing an additional socket.

Seems like everyone is making nano sockets these days. Oddly enough Astro is the only game in town with a proper ratchet that locks them into place. Everything else I tried just let the socket fall out unless you used a locking backplate. The Astro tool solves this problem. Honestly I don’t see myself using my other sockets or wrenches too much after having been exposed to this ratchet. It would make for an absolute killer mini tool kit for tackling most jobs.

Great for getting into tight spaces. Ratchet mechanism feels smooth and doesn’t skip. It isn’t very thick, and feels like it may break with too much force.

Firstly, the quality is pretty strong. Its long handle makes it super easy to crack bolts or nuts. Slim head design can get through almost tight spaces. Perfect pair with Astro Tools 78319 socket set. No regret at all.

Best ratchet I own. Long reach,with short sockets it fits in tight spots,smooth ratchet action

Good quality

sin duda una excelente inversión. el maneral mide 18" es muy cómodo y robusto. necesario adquirir también los dados 78319. pero también hay otros juegos disponibles.

Goes well with the nano sockets. Just be sure to use it with space as no reverse function to it.