Kuroda Seiko C42-BHK-1AT Boring Head Tool Holder 42mm Shank 12mm Bit Japan

  

Kuroda Seiko C42-BHK-1AT Boring Head Tool Holder 42mm Shank 12mm Bit Japan. The diameter of the usable bite holder is 12?

By caliper measurement The square hole next to the body is 12 mm square. There are many scratches and stains due to use. International Buyers - Please Note. Thank you for your understanding.