Check the listing for details. Plastic Mounting Knobs for CB's and communication mobile radios 2 pcs. Condition: New. Listed at 10.85 USD. "Your Complete Electronic Parts Source" Plastic Knobs for CB's and Communication Radios our stock numbers listed below This is for 2) pcs of a pair of Plastic Mounting knobs for CB Radios, your choice NEW standard heavy duty Plastic mounting knobs 1" Diameter Large Plastic knob, for easy mounting. USABLE Thread size Diameter 6D1-05P 5 mm screw size 2 pcs 6D1-06P 6 mm screw size 2 pcs we do stock several type of microphone plugs and jacks, sold seperatly Contact Seller for additional information or questions. Note: We have many other sizes not listed. Please send us a msg with your request. Consolidated Electronics was created in February of 1979. We are specialists in consumer semiconductors stocking over 25,000 different items. check out other items in our EBAY STORE stores.ebay.com/ceitron Also check our web site for additional items not listed here on EBay.