Tracer EX2 Wheelchair Available in 16 X 16, 18 X 16 and 20 X 16 The Tracer EX2 wheelchair sets the new standard in manual wheelchairs. The Tracer EX2 combines the design and technology of the Invacare 9000 series and incorporates it into the Tracer series. A true dual axle position allows for repositioning the 24" rear wheels and 8" casters for adult and hemi seat-to-floor heights. Offset permanent arms offer full seat width up to 20" with a permanent arm, hemi spaced footrest and a full range of accessories. The new design also makes it possible to interchange components with the 9000 series chairs. Meets RESNA standards for manual wheelchairs in product performance.