Also called "Supinator-pronator" and used effectively to promote pronation and supination of the wrist. Grip Unit: Unit should have single grip hold, precision machined Cast Iron drum, fitted with brake shoes for resistance and smooth plastic handle to grip. The resistance level should be measurable. Drum should also be fitted with a d dial protractor to measure the range of motion. Wall Fixing: Unit should have wall-fixing arrangements with a 20mm chrome plated square tube of 50cm length to adjust the height of grip unit according to the need of patient. Finish: Grip unit should have oven baked black finish with working parts in bright chrome plated finish.