Model: ProForm - PFEL049121 / PFEL04912.1 - Drive Belt. Treadmill Walking Belt, Treadmill Running Belt, Treadbelt, Treadmill Belt.and the answer is none. can be used either for walking or running.-Walking Belts LLC.
The Walking Belts LLC - PFEL049121 ProForm 600 LE Elliptical Drive Belt is ideal for fitness enthusiasts seeking a high-intensity elliptical workout with a comfortable fit and reliable drive mechanism.
