Easy:Guitar tuning tool set with up to five tuning functions, comes with a reusable packaging box for easy use and portability. Affordable: This guitar string winder is priced competitively, making it a for any musician looking to upgrade their gear. Versatile: This tool works with most guitar tuning pegs and can be used on both acoustic and electric guitars. Time-Saving: With its efficient design, winder can help you change your guitar strings in a fraction of the time it would take with a manual method. : Made from materials, this string winder is built to last and withstand regular use. Colour:black Material:plasticandmetalandwooden Package Contents: 1 set X Guitar String Stretcher 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.