Frank's International, Inc.

Frank's Casing Crew and Rental Tools, Inc.

Tom Adrian Banger

Charles Michael Webre

Brian David Begnaud

Dougal Hugo Brown

Peter John Lovegrove

Adam Gerard Pelletier

Embodiments disclosed herein relate to methods and apparatus to inhibit rotation within a drilling rig. The apparatus may include a first member connected to a first component of the drilling rig, and a second member connected to the first member and connected to a second component of the drilling rig, the second component configured to move vertically with respect to the first component. The first member is configured to move vertically with respect to the second member and the first member and the second member substantially inhibit rotation between each other. The apparatus may include a rotational adjustment system, in which the rotational adjustment system is used to connect with one of the components of the drilling rig.

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Lowestoft, United Kingdom

Tom Adrian Banger