Item Type: Electric Guitar Roller String Tree Guide RetainerMaterial: Metal 1DECORATIVE EFFECT: Our electric guitar string guide retainer has a nice decorative effect, install it on your guitar to make your guitar more cool. 2IMPROVES TUNING STABILITY: The retainer helps hold the strings in place, reducing the possibility of string slippage and improving tuning stability during play. 3MADE OF METAL: The guitar roller string tree guide retainer is made of metal to ensure durability and lasting performance. 4EASY TO INSTALL: The guitar roller string tree guide retainer can be easily installed without professional tools or expertise, and can be used by both amateur and professional guitarists. 5LIGHTWEIGHT: Our electric guitar string guide retainer is lightweight and very portable, making it easy to store and set up.