Oneok Partners LP (OKS)

Principal, Maturity and Interest

We will issue the notes in an initial aggregate principal amount of $600,000,000. We will issue the notes in denominations of $2,000 and whole multiples of $1,000 in excess thereof.

The notes will mature on October 15, 2037. Interest on the notes will accrue at the annual rate of 6.85%. Interest on the notes will accrue from September 28, 2007. Interest on the notes will be payable semi-annually in arrears on April 15 and October 15 of each year, commencing on April 15, 2008. We will make each interest payment to the holders of record at the close of business on the immediately preceding April 1 and October 1, as the case may be. Interest will be computed on the basis of a 360-day year consisting of twelve 30-day months. Interest will be payable on overdue interest to the extent permitted by law at the same rate as interest is payable on principal.

If any interest payment date, maturity date or redemption date falls on a day that is not a business day, the payment will be made on the next business day with the same force and effect as if made on the relevant interest payment date, maturity date or redemption date. Unless we default on a payment, no interest will accrue for the period from and after the applicable maturity date or redemption date.

Principal, Maturity and Interest

We will issue the notes in an initial aggregate principal amount of $1,400,000,000. We will issue the notes in denominations of $1,000 and whole multiples of $1,000.

Interest on the notes will accrue from September 25, 2006. Interest on the notes will be payable semi-annually in arrears on April 1 and October 1 of each year, commencing on April 1, 2007. We will make each interest payment to the holders of record at the close of business on the immediately preceding March 15 and September 15, as the case may be. Interest will be computed on the basis of a 360-day year consisting of twelve 30-day months. Interest will be payable on overdue interest to the extent permitted by law at the same rate as interest is payable on principal.

2012 Notes. The 2012 notes will mature on April 1, 2012. Interest on the 2012 notes will accrue at the annual rate of 5.90%.

2016 Notes. The 2016 notes will mature on October 1, 2016. Interest on the 2016 notes will accrue at the annual rate of 6.15%.

2036 Notes. The 2036 notes will mature on October 1, 2036. Interest on the 2036 notes will accrue at the annual rate of 6.65%.

If any interest payment date, maturity date or redemption date falls on a day that is not a business day, the payment will be made on the next business day with the same force and effect as if made on the relevant interest payment date, maturity date or redemption date. Unless we default on a payment, no interest will accrue for the period from and after the applicable maturity date or redemption date.