No price negotiations. No bulk purchase discounts. Please refrain from individual negotiations. You are welcome to purchase directly without any comments asking for a discount. I aim to ship within 24 hours, so I will not send any comments until the item is shipped. Thank you for your understanding. [Limited Stock] Set of 3, unused. Size: Outer diameter approximately 27.7mm, height approximately 15.5mm. Shaft size: Approximately 6.4mm, uses a 2mm hex wrench to secure the shaft, so it can be used with both USA and Japanese pots. Use for repairs and customization of vacuum tube amplifiers, stereo amplifiers, antique radios, audio equipment, guitar amplifiers, and effects pedals, as well as for dressing up guitars like Teisco and Guyatone. Especially suitable for retro guitars. Images 5 & 6 are for size reference. Image 7 is a reference image for the item's use. *Guitar is not included. Shipping will be via regular mail (no tracking number), so delivery may take some time (even within Kanagawa, it may take 3-4 days). *If you let me know in the comment section before purchasing, I can change to "Click Post" (faster delivery with tracking number) for an additional 50 yen. I use recycled materials for packaging.