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. Set of 4, unused. Size: Outer diameter approximately 27.7mm, height approximately 15.5mm. Shaft diameter 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 tube 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 reference images for size comparison. Image 7 is a reference image for the application. *Guitar is not included. *If you notify me in the comment section before purchasing, I can change to "Yu-Yu Mercari Mail Yu-Packet" (anonymous shipping) for an additional 50 yen. I use recycled materials for packaging.