This Stacked Knob Set is made up of 1 x Fender Deluxe Jazz Bass Upper Concentric Knob and 1 x Fender Deluxe Jazz Bass Lower Concentric Stacked Knob, the knobs each feature a white indicator line for easy visual adjustment.

These are for use on dual control concentric potentiometers and the upper control knob has a 4.76 mm diameter mounting hole (to fit concentric pots with a 3/16" top shaft) and the lower control knob has a 6.5 mm diameter mounting hole (to fit concentric pots with a 1/4" bottom shaft). The knobs are used on Fender American Deluxe and Deluxe series Jazz Bass models (the upper knob is Fender part number 0049411049 and the lower knob is Fender part number 0049412049).

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