ARCORA Faucet Supply Lines, 12" Length Bathroom Kitchen Faucet Connector Braided Nylon Water Supply Line 3/8" Comp x 1/2" Comp 2Pcs

I keep a small bin of plumbing odds-and-ends in the shop, and braided supply lines are the thing I reach for most. Recently I used ARCORA’s 12-inch braided nylon supply lines to swap out some aging copper risers under a bathroom sink. The job took one coffee break, zero callbacks, and exactly the kind of leak-free result I want from a simple component like this.

What you’re getting

These are 12-inch flexible supply hoses with a 3/8-inch female compression fitting on the shutoff-valve side and a 1/2-inch female compression nut for the faucet inlet. The jacket is braided nylon over a PEX inner tube, and the ends are solid brass with pre-installed sealing washers. They’re lead-free and intended for potable water. Mine arrived cleanly crimped at the collars, with uniform braid and no stray filaments.

If you’re used to stainless braided lines, the nylon sheath looks and feels different—slightly softer and less “wire-like.” I actually prefer that under sinks because nylon is quieter against cabinet walls and less likely to scuff finished surfaces.

Fit and compatibility

The 3/8-inch compression end is standard for most shutoff valves in North America. The 1/2-inch faucet end mates to the common straight-thread faucet shank. If your faucet has proprietary quick-connects or uses 3/8-inch threads at the fixture (common on some single-hole faucets with integrated hoses), these won’t be the right choice. For typical two-supply faucets with 1/2-inch inlets, you’re set.

Twelve inches is a good length when your shutoff valves are close to the faucet shanks—older vanities and wall-hung sinks often fall into this category. Measure from the valve outlet (stub-out) to the faucet inlet and add a couple of inches for a stress-free sweep. If your measurement is right at 12 inches, I’d move up a size to ensure you’re not forcing a tight radius.

Installation: fast, flexible, and drama-free

The install was exactly how it should be:

• Shut off the water, crack the faucet to bleed pressure, and have a towel handy.
• Thread the 3/8-inch compression end onto the valve by hand, then snug with an adjustable wrench. Repeat on the 1/2-inch end at the faucet.
• No Teflon tape or pipe dope is needed; these are compression connections with gasketed ends.
• Open the valves slowly and check for drips. A modest quarter-turn snug after the first wetting usually seats the washer.

The nylon braid resists kinking nicely. On a cramped vanity where the valve sits off to one side, I was able to make a gentle loop without any flattening or twisting. The collars are knurled enough to start by hand even in tight quarters, but a basin wrench makes life easier if your faucet inlets are tucked behind a deep sink.

Within minutes, I had both lines installed, wiped dry, and pressure-tested. No seepage, no fuss.

Flow and performance

The inner PEX tube on these lines is a touch narrower than some OEM lines I’ve removed. In practice, I didn’t notice any reduction in flow at the faucet. I checked by filling a 1-quart pitcher hot and cold; fill times were consistent with the old lines and within a second of each other. More importantly, there were no whistles, chatter, or hammering when opening the valves—something you sometimes get with hard copper risers.

Because the outer jacket is nylon, it dampens vibration more than stainless braid. On installations where valve buzz or pump vibration can transfer through the line (think RVs or pedestal sinks against tile), this softer jacket is a small but appreciated improvement.

After installation, I flushed both lines for a couple of minutes. The water ran clear immediately and there was no plastic odor or taste. That’s typical of PEX-lined hoses, and a quick flush is good practice regardless.

Build quality and materials

• Brass ends: Threads are clean, plating uniform, and the ferrules seat squarely. The nuts didn’t gall under light wrenching.
• Sealing washers: Pre-installed and well-centered. These are the difference between a quick install and a leaky one; mine sealed on the first try.
• Braided nylon: Corrosion-proof, light, and flexible. It won’t fend off a sharp sheet-metal edge as well as stainless braid would, so avoid dragging it across burrs or screw points.
• PEX inner tube: Durable and pressure-resistant. It’s also tolerant of minor temperature spikes, though like any supply line, it’s not meant for continuous high-heat service.

I look for consistent crimping at the collars and any sign of fraying at the cut ends of the braid—both were tidy here. The lines feel well-made, and the interfaces inspire confidence when you snug them down.

Where these shine—and where they don’t

Strengths:
- Easy, reliable sealing with included washers
- Flexible and kink-resistant in tight vanities
- Lead-free materials suitable for drinking water
- Lightweight and quiet compared to stainless braid
- Good value given you get a matched pair

Limitations:
- The inner bore is modest; if you’re feeding a high-flow commercial faucet, you might want a larger-diameter line
- Not universal—won’t fit faucets with integrated 3/8-inch hoses or proprietary quick-connects
- The 12-inch length is unforgiving if your valves are low; measure carefully and size up if needed

One point of general plumbing advice: even good supply lines aren’t forever. I swap flexible lines proactively about every five years or during any faucet replacement. It’s cheap insurance against the rare but ugly failure.

Tips for a clean install

• Measure twice: stub-out to faucet inlet, then add 2–4 inches for a relaxed curve.
• Avoid overtightening: compression fittings need firm, not forceful. If it drips, tighten in small increments.
• Don’t use Teflon tape on compression threads: the seal is on the washer/ferrule, not the threads.
• Support against abrasion: if the line touches a sharp cabinet edge, add a grommet or sleeve.
• Flush before finalizing: run the faucet into a bucket briefly with the aerator removed to clear any debris.

Value and alternatives

Pricing is competitive for a two-pack, especially compared to big-box stainless equivalents. If you prefer the look and abrasion resistance of stainless braid, those lines remain a solid choice. For most bathroom and kitchen sink applications where flexibility, quiet operation, and quick install matter most, these nylon-braided lines hit the sweet spot.

Bottom line

ARCORA’s 12-inch supply lines are exactly what I want from this category: straightforward to install, leak-free on first pressurization, and flexible enough to route neatly in cramped cabinets. The materials and construction are solid, the flow is more than adequate for residential faucets, and the nylon jacket brings genuine day-to-day benefits in maneuverability and noise damping.

Recommendation: I recommend these supply lines for standard bathroom or kitchen sink hookups where a 12-inch run fits your layout. They’re an easy upgrade over aging copper risers or stiff, generic hoses, they seal reliably without fuss, and they deliver good value. Measure carefully and choose the right length, and you’ll have a quick, tidy, and trustworthy connection.