Ergonomic, Adjustable Computer Desk Extender Arm Wrist Rest Support (BLACK) A Computer Arm Support,Can be attached to desks (Ergonomic, Adjustable) Reduces pressure on wrist,Minimizes strain to the muscles and tendons on the neck, arm, and shoulder and also decreases static strain and fatigue. Soft surface pad provides extra comfort.Made of strong ABS plastic. Adaptable for right or left hand users,180 Degree Rotated No assembly required,Easily attaches to a computer desk up to 4.8 cm (1.9in) thick