The new product will come standard with TN couplers for piping and toilet tanks, and as parts are released, I will purchase them to further upgrade, making these items unnecessary, so I am listing them for sale. - Toilet tank x3 - Toilet drain pipe x2 - Jumper plug receiver x4 - Undercarriage equipment, round x1 - Undercarriage equipment, square x3 Individual sales are also possible, so please let me know in the comments which items you need.