If you want parts for these instruments I have them for you with each pipe cut to size and packaged in a plastic bag in lots of 25 for $125 plus $15 for shipping and handling. You will need to glue the pipes together with either pvc glue (sets up quickly, careful of fumes), super glue (one drop, sets up immediately - use with caution!), Duco cement (longer setup, not so strong) or Gorilla glue (use carefully, long setup, will last forever). Instead of cutting and inserting rubber stoppers, which takes a long time and is fairly dangerous, I have developed a nice, easily insertable, vynl plug that is adjustable and airtight. I give you one stick with measurements on it to be sure that each tube is tuned correctly. You'll have all the materials you need except the glue.