MK-BBG-1146 Concentric Stacked Black Aluminum Knob Top and Bottom

Concentric stacked, black, aluminum knob top and bottom. Lower knob is 5/8"(15.9mm) wide 1/2"(12.7mm) tall, upper knob is 5/8"(15.9mm), approx. 3/4"(19.0mm). Note; The upper shaft of the stacked pot used on all Aguilar and some Bartolini, and Nordstrand preamps will need to be shortened for the upper knob to fit in such a way to not leave too wide of a gap between the upper and lower knob.