This is the replacement walking belt for the Horizon Evolve SG Treadmill. Fits the following models: Horizon, Horizon Series - Evolve HSN - 2008 (TM601), Horizon Series - Evolve SG - 2009 (TM605), Horizon Series - Evolve Simple Step - 2009 (TM613), Tempo Fitness, Evolve CT - 2008 (TM322), Evolve HSN - TM343 - 2008.