Nitro Duet Rollator and Transport Chair, 10″ Front Casters, 8″ Rear Casters, Red Frame. The tool-free two-position contoured backrest is reversible and the arm/foot rests can be raised or lowered allowing for use as either a rollator or a transport chair, Euro-style design, brake cable inside frame, push-button handle height adjustment from 33″ – 37″, adjustable back support height, caster fork design, plastic clip to hold frame closed when folded, 18″ W x 14″ D x 20.5″ H seat with handle, lightweight aluminum frame. 300 lb. weight capacity.