The scope of this license includes the following: Processor of Casing or Tubing Plain End at Groups 1, 2, 3 and 4, J55/PSL 3, K55/PSL 3, N80(1)/PSL 2, N80(Q)/PSL 3, R95/PSL 3, M65/PSL 3, L80(1)/PSL 3, L80(9Cr)/PSL 1, L80(13Cr)/PSL 1, C90/PSL 3, T95/PSL 3, C110/PSL 1, P110/PSL 3, Q125/PSL 3; Processor of Casing or Tubing Threaded and Coupled at Groups 1, 2, 3 and 4, J55/PSL 3, K55/PSL 3, N80(1)/PSL 2, N80(Q)/PSL 3, R95/PSL 3, M65/PSL 3, L80(1)/PSL 3, L80(9Cr)/PSL 1, L80(13Cr)/PSL 1, C90/PSL 3, T95/PSL 3, C110/PSL 1, P110/PSL 3, Q125/PSL 3; Threader QMS Exclusions: Section 5.4, Design and Development

RDT ROTARY DRILLING TOOLS LLP 9022 Vincik Ehlert

Beasley, Texas

5CT-1553

5CT-1553

API Spec 5CT

Effective Date: JUNE 13, 2014 Expiration Date: MARCH 10, 2017