Item Type: Guitar String Locking NutMaterial: Zinc alloy 1DECORATIVE EFFECT: Our electric guitar string locking nut is a great accessory for 7 string double coil electric guitar, which can produce better playing effect. 2STURDY AND CORROSION PROOF: Our electric guitar string locking nut is very sturdy and also has the ability to resist corrosion. 3LIGHT WEIGHT: This electric guitar string locking nut is light weight and very easy to install and carry, you can easily install it with the wrench and and screws in the kit. 4MADE OF ZINC ALLOY: This electric guitar string locking nut is made of zinc alloy material with excellent craftsmanship, which can be used stably. 5IDEAL REPLACEMENT: This electric guitar string locking nut is ideal for replacing old or broken parts and restoring your guitar to its origin strength.