Longcase date wheel collet manufactured from CZ131 yellow brass to enable easy riveting, and giving a yellow antique finish when fitted to an antique clock. The collet seat is 3/16", which allows our date wheel to push straight. The bore is 3.00mm, which fits our rack stud, or Lifting piece stud, and the long bearing part is 19.00mm long, allowing it to be shortened to bring the wheel in line on the particular movement being worked on.