GMB520 Guitar Pickups Single Coil Replacement for Guitar Parts for 4 String GuitarOOTDTYComs: Suitable for 4 String Bass Guitar and 4 String Box for Guitar Cigars. Copper wire provides excellent conductivity. Easy to install and convenient to use. Great DIY guitar parts for guitar lovers, players, students or bands. Replace the damaged, dirty, or old bass bridge with a new one. Specification: Material: Carbon Fiber, Alnico MagnetColor: Black Bobbin: Fiber Coil Wire Length: Approx. 205mm/8.07 inchSpace Between String: Approx. 105mm/4.13 inchPackage Included: 1 Piece Pickup for 4 String GuitarNote: 1. Please allow 1-2cm errors due to manual measurement, please make sure you do not mind before ordering.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.