SMZTools 10PK 16 Inch Faucet Supply Lines, 3/8" Comp x 1/2" FIP Sink Hose Faucet Hose Connector, for toilet hose for Bathroom Kitchen Water Supply with Stainless Steel Braided Supply Line & Faucet Hose Wrench

A box of ten braided supply lines isn’t glamorous, but they solved three lingering plumbing chores in my house in one afternoon. I installed these 16-inch stainless-braided lines from SMZTools on a bathroom vanity faucet, a kitchen faucet swap, and kept the rest as spares in the shop. For basic residential work, they hit the right balance of speed, fit, and price—provided your shutoff valves and faucet connections match the spec.

What they are and who they’re for

These are 16-inch braided stainless supply lines with 3/8-inch compression on one end (for typical angle-stop valves) and a 1/2-inch female connector on the other (for most faucet shanks). The pack includes ten hoses, which makes a lot of sense if you’re finishing a bathroom remodel, maintaining rental units, or you just want to standardize on a single, reliable consumable.

If you’re replacing old plastic or vinyl lines, these are a significant step up in durability and kink resistance. The PVC inner tube is protected by a stainless braid, which handles tight under-sink bends without collapsing. In day-to-day use, that’s what prevents slow-flow frustrations and premature leaks.

A quick but important note: despite the listing saying “toilet,” most North American toilets use a 7/8-inch ballcock connection at the tank, not 1/2-inch. Unless you have an adapter or a nonstandard fill valve, these won’t connect directly to a toilet tank. For faucets, though, they’re right at home.

Installation experience

The standout feature is the integrated hand-tighten “wrench” on both ends—a winged collar that gives you real grip in tight cabinets. I was able to spin both connections by hand almost fully seated. On the valve side (3/8 compression), hand-tight alone got me close, but I still gave it an additional snug with an adjustable wrench—about an eighth to a quarter turn—to stop a tiny weep. On the faucet side, the gasket did the sealing and hand-tight was enough; no Teflon tape needed or recommended.

The 16-inch length is forgiving for standard vanity setups where the stops are below and slightly offset. I could route a gentle loop without forcing anything into a sharp radius. If your valves are far off to the side or lower than usual (pedestal sinks, floor-mounted stops), measure carefully—16 inches may be short. Likewise, for tight under-sink spaces, 12-inch can be cleaner, but 16 inches is a good general-purpose choice.

A few practical pointers from my installs:
- Flush the angle stop briefly into a cup before attaching the line to clear debris that can get caught in the faucet cartridge.
- Start both connections by hand to avoid cross-threading, then finish with a light snug on the valve side.
- Wipe connections dry and check again 10–15 minutes later. Re-check the next day after a few temperature cycles.

Fit and compatibility

On my bathroom and kitchen faucets, the 1/2-inch female end mated to the faucet shanks using the built-in gasket—no sealant, no drama. If you’ve installed faucet lines before, you’ll recognize this as the common straight-thread female connection with a washer that seals on the shank face. Despite the “FIP” phrasing you might see, this behaves like the typical faucet connector and does not require thread sealant.

The valve side uses 3/8-inch compression, which is standard for most modern angle stops. If your house has older 1/2-inch compression or 1/2-inch NPT outlets, you’ll need an adapter or a different line. This is the one area where “universal” can be misleading—plumbing isn’t perfectly standardized in older homes. A five-minute audit under each sink before you order will save a lot of grief.

As mentioned, toilets are the odd duck here. Most tanks demand a 7/8-inch female line, so don’t count on these unless you’ve changed the fill valve to a 1/2-inch compatible unit.

Build quality

The stainless braid is consistent and tight, and the crimp collars are clean with no frayed wires or sharp edges out of the box. The winged collars feel sturdy, not flimsy, and they make finger-tightening far easier in confined spaces. The PVC cores didn’t impart any odor, and flow was unobstructed—no rattles, no reducer inserts to knock free.

I didn’t see any obvious manufacturer markings for certifications on the lines themselves. For many homeowners that won’t matter, but if you’re working in a jurisdiction that requires listed components (ASME A112.18.6/CSA B125.6, cUPC, etc.), verify compliance before inspection. In my installs, the lines performed as expected—no leaks, no sweating, no odd noises through pressure changes.

Performance over a few weeks

After installation, I ran both faucets through frequent hot/cold cycles and checked connections periodically. The lines stayed dry, and the braid didn’t buzz or hum with quick shutoffs (a problem I’ve had with cheaper, looser braids). Flow rate was identical to the OEM hoses I pulled, so there’s no hidden restriction.

One subtle benefit of the winged collars: it’s harder to over-torque. Traditional hex collars beg for a wrench, and over-tightening can crack a compression nut or crush a gasket. With these, hand-tight plus a brief snug on the valve side landed me in that sweet spot every time.

The value of a 10-pack

Buying a ten-pack makes sense if:
- You’re swapping multiple faucets during a renovation.
- You maintain a few properties and want the same parts on hand.
- You like to replace supply lines proactively every 5–7 years to avoid surprises.

For one or two sinks, the pack is overkill unless you want spares. But per-line cost is far better than big-box singles, and having a couple extra in the drawer is exactly the kind of preparedness that prevents a Sunday night hardware run.

Limitations and caveats

• Toilet compatibility: Not a direct fit for most tanks that need 7/8-inch. Plan on separate toilet-specific lines.
• Length: 16 inches is versatile, but measure; pedestal sinks and offset stops may require longer.
• Valve size: These expect 3/8-inch compression outlets. Older homes with 1/2-inch stops need adapters or different hoses.
• Listings: If you require certified lines for code or warranty reasons, confirm markings and documentation.
• Hand-tight claims: The winged collars are great, but expect to snug the valve side with a wrench for a guaranteed seal.

Tips for a clean install

• Replace both hot and cold lines together. If one is aging, the other isn’t far behind.
• Never reuse crushed gaskets. If a gasket looks distorted, swap the hose rather than over-tightening.
• Support the faucet shank while tightening to avoid twisting the faucet body.
• Label the install date on a piece of tape under the sink. Future you will thank you.

Alternatives to consider

• For toilet tanks: Use a dedicated 7/8-inch ballcock x 3/8-inch compression braided line.
• For longer runs: Step up to 20–24 inch braided lines to eliminate tight bends.
• For unusual valves: Choose lines that match your stop valve outlet (1/2-inch compression or 1/2-inch NPT), or replace the valve to standardize on 3/8-inch compression.

Recommendation

I recommend these SMZTools supply lines for standard faucet installations that use 3/8-inch compression stops and 1/2-inch faucet shanks. The braided construction, secure crimps, and winged collars make installation quick and low-stress, and the 10-pack is a smart buy if you’re outfitting multiple sinks or want dependable spares on the shelf. Just be mindful of compatibility—especially with toilets and older valve setups—and measure your required length before committing. If your plumbing matches the spec, these lines are an easy upgrade over builder-grade plastic, with a smoother install and a lower risk of leaks over time.