IKN Jazz Bass Wired Control Plate Chrome Plated Loaded Plate for Fender Jazz Bass JB Guitar Pre-wired switch control plate set for Fender Jazz Bass replacement. The control plate is fully loaded and installed with knobs, pots,jack and wires. Plate Length:approx.150.5 mm.Jack Hole Diameter:approx.6.35mm .Mounting Holes Diameter:approx.3.5mm. The plate material:Metal;Knobs:Metal knob.Color:Chrome. Package Includes:1 * JB bass control plate.