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Find guitar string ferrules, ferrule blocks, rollers and replacement hardware. Measure hole diameters, mounting spacing and screw threads; metric and imperial fittings are not interchangeable.
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1–9 of 9 products
Aumsen - Upgrade Pivot Screws for Steinberger GT-Spirit PRO Deluxe
Hardened-steel pivot screws for a Steinberger Spirit GT-PRO Deluxe with R-TREM bridge and M5 stud screws. They are intended as direct replacements; remove and measure an original screw before ordering.
ESP Style ARMING ADJUSTER Tune Stabilizer
A compact tremolo arming adjuster designed to simplify spring balancing. Its small footprint is specified in all three dimensions, allowing you to check clearance before installation.
Brass Ferrule Block - Upgrade 10.5-10.8-11.2
A brass ferrule block in natural brass finish for a string-through guitar build. Choose the listed spacing to match your body and bridge drilling before installation.
3 options
BRASS String Body Ferrules for Fender Telecaster/Tele - NICKEL
Nickel-finished string-through-body ferrules for a Tele-style or other string-through bridge. They retain the string ball ends at the rear of the guitar body; check the drilled holes before installation.
Through Body Ferrules Install Tool for Stratocaster Tele TL
A stainless-steel tool for installing through-body string ferrules on Strat- or Tele-style guitar bodies. Its purpose is to help position ferrules during assembly without relying on improvised tools.
Brass String Body Ferrules for Fender Telecaster/Tele - Pack of 6
Six brass string-through-body ferrules for Tele-style builds. Fits 8.3mm body holes; choose natural brass or nickel-chrome finish.
2 options
AUMSEN String Ferrule Block - Upgrade 2 1/16"(10.5mm) spacing for tele
A natural-brass string ferrule block listed for Tele-style applications. Its solid-brass construction and specified spacing should be checked against the body and bridge before installation.
Guitar Fret Understring Leveler-4.5" (114mm) aluminum alloy
An under-string fret leveler for fretwork while the strings remain in place. The listing identifies an aluminum-alloy body and a 4.5" length; check working clearance on your instrument.
AUMSEN Upgrade Kit, Bigsby B5/B7 Front Roller 2-1/16（52.5mm）
A stainless-steel front roller and axle upgrade for Bigsby B5/B7 assemblies. The grooved roller is designed to maintain string alignment, while embedded bearings are listed on both sides; measure the total length before ordering.
Hardware is the connective tissue of a build — the parts nobody photographs but every tech swaps during a refresh. Aumsen machines the small pieces that routinely wear out or get upgraded: through-body string ferrules, Bigsby B5 / B7 roller upgrades, tremolo pivot screws, jack plates, knobs, switch tips, and the common luthier fixtures (radius gauges, fret levelling beams). Before ordering, confirm the hole diameter and body depth for ferrules, the roller diameter and shaft length for Bigsby rollers, and the screw pitch (imperial 6-32 / 8-32 vs metric M3 / M4) for any threaded item.
Brass and stainless are the workhorses — brass for anything where warmth matters, stainless where it has to resist corrosion and thread wear.