Guitar Accessories: Suitable for most acoustic and electric guitars. Guitar accessories: Lightweight, compact, easy to use. The strings can be loosened and tightened by loosening and winding the tuning pegs. Made of ABS, durable Electric Guitar Accessories: Note: Product colors are shipped randomly. Portable Guitar Accessories: The bridge can also be pulled out with the groove. Very convenient guitar repair tool. Colour:random color , don't accept the specified color Material:ABS Package Contents: 25 x Guitar String Machine 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.