Check the listing for details. Black Stacked Dual Control Audio Knob Concentric. Condition: New. Listed at 6.99 USD. Black Stacked Dual Control Audio Knob Concentric For use with concentric stacked potentiometers with 6mm top, and 8mm bottom. Description : -For use with Concentric Stacked pots ---6mm top, 8mm Bottom -Package Includes:2 pcs. (1top, and 1 bottom) Please visit my store for all you Guitar and Bass needs. Payment Options: Paypal payments, and Credit card payments accepted thru Paypal. Shipping: Items are usually sent out the next business day, and sometimes same day. The usual cutoff time for same day is 11:30am est. Sat. 10 am est. All items are sent USPS FIRST CLASS MAIL, unless otherwise noted. Sales Tax: All new York state buyers are charged 8.875% sales tax (sorry I live in NYC) Customer Service: -ANY QUESTIONS EMAIL ME, I'D BE HAPPY TO HELP IN ANY WAY! Returns: -I do my best to make sure everything I ship is in Brand new working order, but in case you have problems I will replace or refund upon return any defective or sub standard items with no questions asked. -Returns for any reason other than defects and wrong items shipped are subject to a 20% restocking fee. Thank You and Have a Great Day! Listing and template services provided by inkFrog