TUOREN Guitar String Ferrules Black

If a string-through guitar has worn, broken, or missing ferrules, replacing them can restore the small parts that guide the strings through the back of the body. This TUOREN set includes six black ferrules for that job, with dimensions that give you something concrete to compare against the holes in your instrument. The listing says they fit most USA Standard Fender Telecasters and are compatible with vintage Telecaster and Strat-style electric guitars. That is useful guidance, but the fit still depends on your guitar’s actual hole sizes.

Technical details

The set contains six ferrules, and the listed color is black, silver and gold are also mentioned as optional colors in the product information. Each ferrule is 13mm long, with a 10mm top outer diameter, an 8mm insertion diameter (also listed as 5/16"), and a 4mm top hole for the string. They install on the back of the guitar body, where the strings pass through toward the bridge.

The listing presents these as replacement parts for old or broken ferrules and says they mount directly into the body. It also claims they can increase string pressure at the bridge and affect resonance and tone. Those are intended benefits, not a guarantee of an audible change: the information provided does not establish how much the sound will change on a particular guitar. The more dependable reason to consider them is having correctly sized replacement ferrules when the originals need attention.

Compatibility & requirements

The stated fit covers most USA Standard Fender Telecasters, plus vintage Telecaster and Strat-style electric guitars. “Most” matters here: style alone does not confirm that the ferrules will fit your instrument. Compare the listed length and diameters with the existing parts and body holes before ordering, especially if the guitar has been modified or you are replacing parts from an unknown source. A mismatch can prevent a clean fit, don’t proceed without that measurement.

It suits you if you need a six-piece replacement set for a compatible string-through body and can match its dimensions to your guitar. It might not be a great match if your instrument uses a different string-through layout or its ferrule openings do not correspond to the measurements listed.

Usage tips

Before installation, lay out the old ferrules and compare their size and shape with the new set. Check that the strings pass through the 4mm top holes and that the insertion sections align with the body openings. For example, if one ferrule has loosened at the back of a Tele-style guitar, this set gives you six replacements to work with rather than a single part. The product is described as easy to install, but the instructions do not explain a specific tool or installation method, so avoid forcing a ferrule into a tight or misaligned opening.

Compared with keeping an old damaged part in place, replacing the set addresses the worn hardware directly. If the existing ferrules are intact and your main goal is a tonal change, the claimed resonance benefits alone may not be a strong reason to swap them.

Questions before you buy

How many ferrules are included? Six are included in the set.

What color is this version? The product name specifies black, although the description also mentions silver and gold as optional colors.

Where do the ferrules go? They fit into the back of the guitar body at the string-through points, where the strings travel toward the bridge.

Is it worth it?

This is a practical replacement set when your current ferrules are damaged or missing and the listed measurements match your guitar. Its clearest advantage is the defined six-piece quantity and the dimensions to compare before installation, the sound-related claims are less certain as a purchase reason. Choose it for a compatible string-through setup, not as a universal fit or a guaranteed tone upgrade.