Item Type: Guitar Tuning Peg ButtonsMaterial: Ebony + MetalColour: Black 1Basic Specifications: The size of the mounting hole of this guitar knob is about (L x W) 3.8mm?4mm, which is easy to use 2Ebony+Metal: The guitar knob is made of high quality ebony+metal materials, which makes feel more comfortable to the touch, exquisite workmanship, good texture 3Scope of Application: This is a peg buckle handle that is widely applicable to the head button of electric guitars and folk classical guitars 4Long Service Life: The guitar knob is environmentally friendly, odorless, and durable, stable in performance, and long in service life 5Elegant Appearance: This is a peg buckle handle, with an elegant appearance, and is beautiful guitar head decoration