practitioner seat triangle ruck long gas springTriangle Ruck Practitioner's Chair This triangular shaped seat provides freedom of movement in the thighs with molded lateral support elements, allowing you to move easily throughout your practice without having to get up from your stool. With its five self braking wheels and two gas springs for different selectable seat heights, this stool will be perfect for your office! The chairs are shipped as a kit. Technical characteristics: Seat height with