Musiclily Guitar 6mm Tremolo Arm Tremolo Bar Whammy Bar for Tremolo Bridge System Electric Guitar Replacement, Chrome with White Tip (Pack of 2) Fits For electric guitar single tremolo bridge system Thread size is 6MM in diameter Bar size is 5.3mm in diameter Tremolo Arm Trem Bar Whammy Bar,Chrome body with white tip. Package include:2 x Guitar Whammy Bar