We hereby revoke our acceptance of the goods delivered on [date], pursuant to our contract of [date].
As we informed you on [date], the nonconformity of these goods to the contract ([description of nonconformity]) substantially impairs their value to us.
Our prior acceptance was based on your assurances that the defects would be cured within a reasonable time.
Since you have failed to cure, we must revoke pursuant to Section 2-608 of the Uniform Commercial Code.