Ferrules bushings with nuts help electric guitar or bass body and neck connected. Made of reliable quality material, they are suitable for electric guitar and bass players, luthiers, DIY lovers and more. Features: Designed for helping electric guitar or bass body and neck connected. Recessed neck screw bushings, for electric guitar or bass neck place, easy to install, convenient to use. Sturdy metal material, with high strength and durability. Rustproof, anti-corrosion, wear resistant and shiny. Perfect accessories for electric guitar and bass players, luthiers, DIY lovers, etc. Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Silver or Black or Gold (Optional) Material: Metal Screw Size: Approx. 44.5 x 4.5mm or 1.75 x 0.18in Ferrule Diameter: Approx. 14mm or 0.55in Package Size: Approx. 7 x 5 x 1cm or 2.76 x 1.97 x 0.39in Package Weight: Approx. 40g or 1.41oz Package List: 4 x Screw 4 x Ferrule Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.