A guitar has a wrench tremolo bar thereon, replacing the standard tremolo bar, with {HEAD ~ the wrench tremolo bar} having {TAIL ~ a desired wrench} on at least one end of the wrench tremolo bar, to cooperate with the string fasteners on the guitar, which greatly facilitates tuning, changing or replacing of a guitar string 
having
A guitar has a wrench tremolo bar thereon , replacing the standard tremolo bar , with { HEAD ~ the wrench tremolo bar } having { TAIL ~ a desired wrench } on at least one end of the wrench tremolo bar , to cooperate with the string fasteners on the guitar , which greatly facilitates tuning , changing or replacing of a guitar string
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH