Description/Features: 1. This tremolo plug greatly improves the performance of the guitar by stabilizing your tremolo. 2. It will automatically restore your fully floating tremolo to its precise zero neutral position, eliminating tremors and sagging, keeping your guitar tuned. 3. Install the tremolo stabilizer in the rear chamber where the spring is located on your tremolo guitar. 4. This device is suitable for any type of tremolo 5. The product is , compact, and convenient to carry Specifications: size: 6 x 1 x 1.5cm Material: iron colour: brass Package Contents: 1 x Stabilizer 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.