Features: Carefully manufactured, with compact structure, durable and anti-corrosive.<br> Can helps to lock the strings and is suitable for stringed instruments such as guitars.<br> Selected materials, black plated brass lock nut + camel bone nut.<br> Small size, easy to carry and store, easy to use and good practicality.<br> Strict quality control and quality assurance, high safety factor, can be used with peace of mind.<br> Specifications: Material: Brass and Camel Bone<br> Size: 4.34x1.4x0.75cm, 5.06x1.4x0.75cm, 5.77x1.45x0.75cm<br> Type: 6-String / 7-String / 8-String<br> Package Includes: 1 Set Guitar Locking Nuts<br> note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.<br> 2.Due to difference between different monitors, the picture may not reflect the actual color of the item.