No price negotiations. No bulk purchase discounts (shipping discounts). Please refrain from individual negotiations. Please purchase directly without waiting for a response. I aim to ship within 24 hours, so I will not comment until the item is shipped. Thank you for your understanding. *I do not issue receipts. [Limited Quantity] Set of 4 Unused, purchased from the USA. *There are scratches on the silver parts. L size '70s style retro black/silver plastic knobs. These knobs use a slotted screw to secure to the shaft, so they can be used with both USA and Japanese pots. Dimensions: Outer diameter of the hat section is approximately 29mm, minimum outer diameter of the black knob section is approximately 14.6mm, and height is approximately 17.8mm. Suitable for repairs and customization of vacuum tube amplifiers, tube amplifiers, stereos, antique radios, audio equipment, guitar amplifiers, and effects pedals, as well as for dressing up bizarre guitars. The image in the 5th photo is a size reference; the item is the one in the center. Sets with different quantities are also available. Shipping will be via regular mail (no tracking number), so delivery may take some time. *If you let me know in the comment section before purchasing, I can change to "Click Post" (faster delivery with a tracking number) for an additional 50 yen. I use recycled materials for packaging.