No price negotiations. No bulk purchase discounts. Please refrain from individual negotiations. You can buy directly without any comments declining offers. I try to ship within 24 hours, so I will not comment until the item is shipped. Thank you for your understanding. [Limited Quantity] Set of 2 Purchased from the USA. Unused, dead stock knobs made of plastic. They are called "radio towers" because they resemble broadcast towers. A wonderful design not found in Japanese products. This type uses a 1.5mm wrench to secure the setscrew from the side, so it fits both internal and external pots (wrench not included, please prepare one). Maximum outer diameter: approx. 28.6mm, height: approx. 15.6mm, shaft hole diameter: approx. 6.5mm. Use for repairs and customization of vacuum tube amplifiers, tube amplifiers, stereos, antique radios, audio equipment, guitar amplifiers, and effectors, as well as for dressing up bizarre guitars. The 5th image is a reference image for size comparison. The 6th image is a reference image of an example of installation. Shipping is by regular mail (no tracking number), so delivery may take some time (even in Kanagawa and surrounding areas, it may take 3-4 days to arrive). * If you let me know in the comment section before purchasing, I can change to "Click Post" with faster delivery and a tracking number for an additional 50 yen. Recycled materials are used for packaging.