Musiclily 6mm Guitar Single Strat Tremolo Arm Trem Bar Whammy Bar for USA/Mexican Fender American Stratocaster Squier Standard Electric Guitar Parts, Chrome with Black Tip Fits for USA /Mexican Fender Stratocaster Squier guitar Thread size diameter: 1/4 inch( 6mm);Bar size diameter:3/16 inch (5.3mm) Material: alloy metal; Color: Chrome Tremolo arm with black tip Package Include: 1pc guitar tremolo arm