6Pcs String Locking Nut Zinc Alloy Headless Electric Bass Guitar String Locking Nut Set Brass Instruments High Quality 3.4.5.6 .7.8 String Electric Headless Bass String Nut.Lock the strings tightly.9.6X 7mm(L*W), about 14mm string spacing. Made of zinc alloy, corrosion resistant and durable.1 wrench and 6 mounting screws are provided for easy installation. Suitable for: 3.4.5.6.7.8 string electric bassWeight: 19gColour:silverMaterial:Zinc alloyPackage Contents:6 x Nuts6 x screws1 x WrenchOnly the above package content, other products are not included. Note: Light shooting 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.