Use this innovative electric guitar parts shim to greatly reduce your string-adjusting time.Replacing broken strings on a floating guitar bridge tremolo doesn't need to be meticulous. No need to continuously hold the whammy bar for electric guitar down when adjusting or removing strings. Simply push the bar down once and slide the string changer guitar shim under the bridge. Keep your guitar in pristine condition. When replacing tremolo parts, slips can happen creating dents and gouges in your guitar. ABS bottom covers the entire underside of this shim, preventing scratching and holding it in place,making it easier to make adjustments.The tapered sides run the entire length of the shim, making it simple to insert under the bridge. The shim fits both 6 and 7 string tremolo floating bridges. Choose between the 5mm sides depending on your guitar. Brand new Strat style knobs for electric guitar. Product Name:Floating Tremolo Bridge Shim Without adjusting wrench Colour:Black Material:ABS Package Contents: 1 x Guitar Tremolo Bridge Shim Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.