|Utility:||Basic or Auxiliary|
Sit and grasp cable stirrup. Rest forearm on thigh with palm up and wrist just beyond knees.
Allow cable bar to roll out of palms down to fingers. Raise cable bar back up by gripping and pointing knuckles up as high as possible. Lower and repeat.
Hand may be placed under wrist (as demonstrated) to offer stability and to maintain horizontal orientation of forearm.