From bulk single strings by the gross, to complete retail packaged sets, we have what you need. Electric, Acoustic, and, Bass guitar. Banjo, Mandolin, Resonator, Ukulele, and Classical guitar. We can even make custom specs strings to your needs.


Nickel8 – A unique blend of nickel/iron gives these strings high output with a long sustaining tone.

Silverline Classic – Using premium nylon silk core and wrapped in silver ensures the best overall projection and brilliant tone for classical guitars.

Bronze Masters – An excellent all-around phosphor bronze alloy 92/8 formula. The most popular choice of professionals.

Brass Masters – Brass 80/20 formula strings offer a "middle ground" of tone, falling between the warm bronze and bright phosphor bronze tones. 

Stainless Steel – Stainless steel wire wrapped around a hex shaped steel core wire. Brighter tone with longer string. Extended lifespan strings. 

VCI Application Coating– VCIs are molecules that inhibit corrosion by forming a thin, protective layer on a metal surface within an enclosed space. This invisible layer prevents moisture and environmental elements from reacting with the metal surface and causing corrosion. 


What makes you different from the competition?

No job is too small or too big for GSM. Generally, other string company's private label quantity requirements are large requiring you have to invest a ton of money into the packaging. That can use up a lot of your capital just to get your company off the ground. Our low minimum order quantity limits, along with quick turn around, enable you to operate with low inventory and minimal financial investment. Once your brand starts to take off, we will grow with you! There is no need to throw tens of thousands of dollars into your new string business. Start comfortably, and we will grow together.

However, more importantly, the differentiator between string companies is the type of material they use, the way the strings are constructed and the machines used to produce a final product. Not all strings are the same for this reason. Each manufacturer has its own recipe when manufacturing a string. There is the core to wrap configuration, a maintained pitch angle in which the wrap is applied, the speed at which the wrap spins, and the machinists long term expertise in manufacturing musical strings.

GSM has had long term relationships with raw materials suppliers that span over 40 years. Although technology has changed, USA alloy materials have become better and more reliable. GSM uses a hands-on approach to string making. We do not have automated machines. Every string that comes off the production line is made by a machinist one by one. That machinist controls and maintains the consistency from string to string.

Core to wrap coupling (the way the wrap is applied to the core ) is a huge factor. You cannot just spin a wrap wire on a core and hope it sounds good. The way the wrap is applied to the core is critical to the strings sustain, projection and tone longevity. Our one-off custom ball end machines insure the right twist-loc around the ball is applied. Without this, a string can either come off at the ball or slip which causes tuning problems. Each string is inspected three times, then hand coiled and placed into its envelope. 




JAMSTIK by Zivix Corporation. Installed with custom GSM strings since 2013, a versatile MIDI controller, the jamstik+ connects via Bluetooth 4.0 to your phone, tablet or computer so you can play guitar with any of the 100's of compatible MIDI apps available. It's built to the specifications of a real guitar; so learning and creating are transferable skills.


Luthier Steve Klein broke through the guitar building scene in 1967 with the first major leap forward in the design of the steel string guitar in more than a generation. Considered a pioneer, a genius, and sometimes a radical by his peers, Klein fundamentally shifted the way that players, builders, and collectors view the guitar. GSM is proud to be partnering with Klein Guitars.


LOOG AS EASY AS 1-2-3. Playing songs on guitar can be a daunting task for beginners. Loog solves this: our 3-string guitars reduce chords to the basic triad, allowing for an easier and faster learning process. With a Loog and its accompanying flashcards and app, kids can play songs on day one, feeling rewarded and encouraged to keep on playing and learning.