No price negotiations ❌ No bulk purchase discounts (shipping discounts) ❌ Please refrain from individual negotiations. You can buy directly without any comments asking for a discount. I try to ship within 24 hours, so I will not comment until the item is shipped. Thank you for your understanding. *Receipts are not issued. 【No restock planned】 Set of 3 Purchased from the USA. Unused, deadstock knobs made of plastic. They are called "radio towers" because they resemble broadcast towers. A wonderful design not found in Japanese products. Uses a 1.5mm wrench to secure the setscrew from the side, so it can be used with both internal and external pots (wrench not included, please prepare your own). Maximum outer diameter: approx. 28.6mm, height: approx. 15.6mm, shaft 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 image in the 5th photo is a size reference image. The image in the 6th photo 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 not arrive in 3 or 4 days). *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.