"U-bar"@en . "Ibanez U-Bar shown installed onto Lo-Pro Edge 7 tremolo"@en . "U Bar.jpg"@en . "250"^^ . "It was meant to allow the player to \"palm\" the tremolo for \"whammy effects\" without having to use a normal tremolo arm... all the while being able to palm mute as well. It is still offered for the APEX100 signature guitar to this day. Portal: Tremolo bridges | Parts File:Parts-icon.png"@en . "It was meant to allow the player to \"palm\" the tremolo for \"whammy effects\" without having to use a normal tremolo arm... all the while being able to palm mute as well. It is still offered for the APEX100 signature guitar to this day. Portal: Tremolo bridges | Parts File:Parts-icon.png"@en . . . . "parts"@en .