Global Tuner and Global Tuner Pro:
Available in 32, 34, 37 and 42mm sizes in OFR® Spec and Gotoh/Ibanez® in 34 and 32mm sizes.
Each comprise a Secondary Spring Holder, Thumbwheel and Bell Brass Base.
The GT Pro base is bored to receive the dual Stabilizer Housings
Dual Stabilizes are added to the Secondary Spring Holder