Description: Depending on your project,you' ll have to measure and drill both the guitar neck and body to mount this kit. With locking nut. length of nut:38mm.Specifications: Nut Material :steel Bridge Materia: brass and alloy space to space:19mm Nut size:38*30*13mm Bridge size:91.5*80*18mmColor:blackWeight:415g Package List: 1 x headless guitar bridge 8 x nut mount screws 4 x bridge mount screws 2 x diffenct allen wrenchesThis electric guitar bridge is easy to install and easy to access, and can be adjusted to the tone and height level.Dear friend, if you have any questions or problems, please feel free to contact us, we will reply you within 24 hours.