Guitar tuners pegs with heavy duty internal gear, sturdy and convenient With this string winder, you can replace and adjust your strings easy and labor-saving, the notched head can removes bridge pins quickly and safely. (Random Color) Guitar strap buttons contains two nickel-plated steel strap buttons, felt washers, and mounting screws. Easy to install, just attach it to your strap, and screw securely into locking position Specification Guitar tuners pegs have quality sealed machine heads and heavy duty internal gear Metal Colour:black Material:Plastic + metal Package Contents: 12 x Guitar machine head 12 x Ferrule 12 x Threaded bushing 12 x screw 6 x guitar picks(random, do not accept the designation) 4 x guitar strap button 2 x guitar string winder 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.