Description: Sound board sensitive, copper coil magnetic pickup Noiseless class discreet Adjustable pieces for and smooth threadless Highly feedback resistant, quiet and to install and turn in your guitar without any solder or worry about wiring schematics. For 4 String also can be used for 6 strings guitar Frequency responses: 20Hz- 20KHz Resister: 4.5-5K Color: Black, White / knob Size Chart: The distance from (center to center): 0.95 cm / 0.38 inch Overall length of the mounting flange: 12.22 cm / 4.81 inch Width of the mounting flange: 3.17cm / 1.25 inch Package Includes: 2 x Guitar magnetic pickup 4x Screws 4 / control knob Note: Size for manual measurement, there may be a cm error, belongs to the normal phenomenon. Due to between different monitors, the picture may not reflect the actual the . Please understand, Thank you