Finger hanger grip, edge thickness 40 mm. Grip with hook hook and for transitions between rods / rings etc.
A device that includes 3 central elements: 1. 1. Holding handles on the sides 2. A pair of spinner balls 3. A rotating finger 4. A "window" grip
A medium ball that rotates on bearings. Comes with Allen screw, nut and washers ready to install on a plate.
Each side has a medium ball that rotates 360 separately.