Magnetic Safety Key Lanyard 1000105094 Works W AFG Livestrong Merit Triumph TreadmillUsed on the following models: Advanced Fitness Group 3.5AT - TM659B - 2015 Horizon Horizon - CT5.1 - 2010 (TM625) Horizon - CT5.3 - 2012 (TM660) Horizon - CT7.1 - 2010 (SN TM633K12700325-Below) Horizon - CT7.1 - 2011 (SN TM633K127100326-Up) Horizon - CT9.1 - 2010-2..