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🔧 Upgrade your air game—because quality leaks are so last season!
The Milton (S-210) 12-piece M-Style Coupler and Plug Kit features 1/4" NPT brass couplers and case-hardened steel plugs with Buna-N seals, delivering leak-resistant, high-performance air fittings. Rated for up to 300 PSI, 40 SCFM airflow, and 250°F temperature, this kit is fully compatible with most manufacturers and built for durability in professional pneumatic applications.









| ASIN | B005IUEC2O |
| Best Sellers Rank | #16,575 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in Air Tool Fittings |
| Brand | Milton |
| Brand Name | Milton |
| Color | Brass |
| Connector Type | Plug |
| Customer Reviews | 4.8 out of 5 stars 1,652 Reviews |
| Exterior Finish | Brass |
| Global Trade Identification Number | 00030937002105 |
| Included Components | 1 Milton Branded Product |
| Item Dimensions | 4.63 x 4 x 1.5 inches |
| Item Type Name | Milton s-210 12 Piece M-Style Coupler Kit |
| Item Weight | 1.6 ounces |
| Item dimensions L x W x H | 4.63 x 4 x 1.5 inches |
| Manufacturer | Milton |
| Manufacturer Part Number | S-210 |
| Manufacturer Warranty Description | One Year Limited |
| Material | Brass |
| Material Type | Brass |
| Model Number | S-210 |
| Number of Pieces | 12 |
| Set Name | Milton (S-210) M-Style Coupler and Plug Kit (12-Piece) |
| Size | 1/4 inch |
| Thread Size | 1/4 NPT |
| Thread Type | NPT |
| UPC | 745332379003 030937002105 |
| Unit Count | 1.0 Count |
J**P
Missing parts. Part found
This product arrived on time (actually early) and is of excellent quality and fit and function is perfect. However, the package I ordered is described as having two 715 couplers, 8 727 male plugs and 2 728 female plugs. It was missing one of the 728 female plugs. The package was not opened and arrived in tact just missing the one 728 female plug. It seems to be a quality control issue with the package. It would be nice if it were easier to solve this issue without having to jump websites to address it. Part found. I would like to apologize to Milton for my first review. I actually found the fitting that I had originally said was missing. Apparently it had rolled off of my workbench without me noticing and I found it today while I was cleaning up. I have no problem admitting that I was wrong and I should have done a better job of looking for a missing fitting that was more or less directly in front of me. I am changing my rating to five stars because as I said in my first review the product is excellent in quality and performs perfectly. Again I appreciate Milton’s understanding my human nature and acceptance of my humble apology.
B**S
Quality USA made air tool and air line connection from Milton!
Milton “M” style air tool and air hose couplers. These have been around for decades and are still a standard in most garages. Good standard airflow for most uses in automotive applications. Smaller size than bigger super high flow types or universal connectors. Rust proof brass connectors that are not affected by a little water. This is a great starter kit if you just bought an air compressor for home. Positive seal prevents air leaks and hissing hoses. Overall a great design. These tool fittings are steel and a few grams heavier than aluminum fittings… but I have dropped an air tool with aluminum fittings and they snap off when they hit the ground.
A**R
Well worth the money!
Very good quality! We tried cheaper brands, but they start leaking after only a few months of use.
D**.
Works great
Works as designed and no leaks
S**.
Incomplete Set
This is the right set to buy if you have a 1/4" NPT air hose and an air tool, and wish to connect them all to your compressor. My set was missing one of the parts (female 728). After talking with an Amazon rep I decided to just keep the incomplete set so I could use the other parts and not have to hassle with returning and exchanging them. That's the only reason for the lowered rating. Other than this, the parts which I received seem to be well made. The coupling connection is a bit stiff, but I suspect it will break in a bit and it seals without issue. At 125 PSI on my compressor, they seem to work just fine.
E**Y
These are very high quality. Greatest upgrade I have given my compressors and air tools in a while.
I will always use Milton. I tried cheaper imported products before, and they leak and fail prematurely. Milton is made in the USA, durable, and doesn’t leak down even after sitting with 150psi on them for several days. I put all my non Milton fittings in the recycling and replaced with these. Couldn’t be happier with them.
T**D
Milton air hose products have never failed me in over 55 years
Very well made product, easy to connect to my air hoses and all my air tools. Better made, in my opinion than any other air hose connection products on the market.
L**N
Best couplers on the market !
These are the best couplers on the market, they’ve proven themselves over decades of service and Milton is now the only brand of couplers I’ll purchase. Their quality, durability & ease of use are the “go to” connection solution for my air supply management issues.
N**K
Good stuff.
These are the best. Classic stuff eh. Don't buy the Homie D stuff, they won't last. I bought a 30 year old compressor with these fittings on it. I liked them so much I went hunting for some more for my hoses. The CH ones I got from Homie D started leaking after 5 years.
D**E
top quality
precision
T**.
Milton (S-210) 1/4" NPT M-Style Coupler and Plug Kit, (12-Piece)
جودة ممتازة قطع غيار هوز او لي ماطور هواء الرحلات البريه مقاس نص انش
C**N
Lo mejor
Mílton una de las mejores marcas que conozco y usado por 14 años con muy buenos resultados si quieres calidad res esta
V**R
Great product at a very low price.
Ordered these milton air coupler/ fitting set to replace leaking old fittings, fixed so far no leaks.
Trustpilot
1 week ago
3 days ago