Check the listing for details. 2pcs Potentiometer Volume Control Knobs Aluminum Silver 30x17mm Guitar Amp. Condition: New. Listed at 16.55 USD. Vintage Silver Aluminum Knob 30x17mm Dimension: 30mm diameter x 17mm height For Audio, Amplifier, Video, Bass, Volume Controller and so on.2pcs Potentiometer Volume Control Knobs Aluminum Silver 30x17mm Guitar Amp Vintage Silver Aluminum Knob 30x17mmDimension: 30mm diameter x 17mm heightFor Audio, Amplifier, Video, Bass, Volume Controller and so on.PaymentDelivery detailsTerms of salePaymentl We only accept Paypal.l Payment is expecting within 5days after you win the item or pls contact us.l You must offer telephone for delivery.Delivery detailsl We ship the order within 3days after the payment.l We ship the package by Registered air mail in 7-14days or longer in some countries 20-30days. If you dont receive your item, pls contact us for reshipping or refund.l We ship to the confirm paypal address. Pls make sure your paypal address is right. Or match the address when you payment. A Telephone number is better for delivery.Terms of saleWe stand behind every product we sell. If you're not pleased with your purchase, we'll be happy to make an exchange or refund the product price less S&H within 30 days of your purchase. For any exchange or refund, we need the original receipt or a record of the purchase in our system, and the product must be in its original condition, including the box, UPC bar code, packaging, and all accessories. Please allow up to 10 business days for returns to be processed. Shipping and handling charges are not refundable.