![TOWNER String Tension Bar](http://townerusa.com/cdn/shop/products/IMG_9753_{width}x.png?v=1646094381)
Your #1 Bigsby Retrofit System by TOWNER includes:
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TOWNER String Tension Bar
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2 Felt Pads
TOWNER String Tension Bar
The TOWNER String Tension Bar helps to manage your guitars string tension for low bridge heights and sustain, recommended for guitar models with frequensator tailpiece or trapeze tailpieces (NOT FOR USE WITH FLOATING BRIDGES).
For years, guitarists with trapeze setups have asked me to make a string tension bar to provide string tension because their bridge height and string setup have low action. The new TOWNER String Tension Bar provides the necessary tension to keep your strings in place.
Under the Tune-o-Matic, ABR-1 or Nashville bridge posts use at least one pair of thumbwheels to firmly hold the string tension bar in place, SEE PHOTOS ABOVE in GALLERY.
The reason for the 2 thumbwheels is to have one pair hold the STB in place and the other two to manage the height of the bridge.
The TOWNER String Tension Bar also works with Jazzmaster vibratos, see photos above.
NOTE: I've learned that 'most' guitars (Gibson, Epiphone, Gretsch, Guild, etc..) use SAE 6-32 threaded bridge posts, here is a link to SAE threaded thumbwheels SAE Thumbwheels
If you need metric, FaberUSA carries metric thumbwheels, see link here
https://faberusa.com/product-category/faber-thumbwheels/faber-metric-thumb-wheels/