No price negotiations. No bulk purchase discounts (shipping discounts). Please refrain from individual negotiations. Please purchase immediately 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. Material: Plastic with a red pointer. Size: Outer diameter approximately 16mm, height approximately 14.5mm. Push-fit type, so there are no side fixing screws. Shaft hole is approximately 6.0mm, compatible with metric pots. Not compatible with CTS and other inch-standard USA pots. *If the fit is loose, please adjust by slightly widening the pot shaft. (This is common knowledge, so it is not subject to complaints, please be aware.) Use for repairs, customization of vacuum tube amplifiers, tube amplifiers, stereos, antique radios, audio equipment, guitar amplifiers, and effectors, as well as for dressing up bizarre guitars. Images 5-7 are reference images for size comparison. Please check the number of splines on your pot to determine compatibility. The right side of image 8 shows a Japanese metric pot shaft. Shipping is by 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" with faster delivery and a tracking number for an additional 50 yen. Sets with different quantities are also available. *If you need a large quantity, please contact me in the comment section. You can purchase immediately without contacting me. I use recycled materials for packaging.