The string locking nut is for 6-string electric headless guitar, you can observe the detailed size in the picture, zinc alloy material offers it well durability, it helps to tightly lock the string. Features: 6-string electric headless guitar string locking nut. It helps to lock the string tightly. 42.5 * 26.2mm(L * W), 35.5mm string spacing. Zinc alloy material, with compact construction, anti-corrosive and durable. Supplied with 2 wrench and 2 mounting screw, easy to install. Specifications: Material: Zinc Alloy Suitable for: 6-string Electric Headless Guitar Color: Black Item Size: 4.25 * 2.62cm / 1.7 * 1.0in Item Weight: 65g / 2.3oz Package Size: 4.5 * 3 * 3cm / 1.8 * 1.2 * 1.2in Package Weight: 66g / 2.4oz Package List: 1 * String Locking Nut 2 * Wrench 2 * Screw