For organizing equipment parts Control knobs Made in Japan (may not all be Japan-made) Set of 9 control knobs: B500kΩ and A250kΩ. Some may not include washers, etc. These are old items, and details are uncertain, so please understand that they are sold as-is, with no returns. Thank you for looking. Shipping via Sagawa Express (may be subject to change) Sales not available to Okinawa/remote island regions.