Check the listing for details. Plastic Guitar String Winder Speed Peg Puller Bridge Tuners Device Change. Condition: New. Listed at 11.35 USD. What is this?This Guitar string winder is a string winder and bridge pin puller for guitar, bass, ukulele, and more string instruments. What will I get?Color: Black, Purple, Blue, PinkMaterial: PlasticTotal Size: 106mm x 50mm/4.17" x 1.97"(L*W)In the package of: 4pcs x Guitar string winder(1pcs: Black, 1pcs: Purple, 1pcs: Blue, 1pcs: Pink)Are there any advantages of the product?This tool fits virtually all tuning pegs, it can easily tighten the instrument strings. You can also use it to remove the guitar pins. Used for string instrument maintaining and repairing, keeps your guitar in good condition. How to use it?Loosen and tighten strings by unwinding and winding at the tuning pegs. Pull out the bridge pins with the notch in the handle.