Horizon Treadmill Running Belt Model DT850 TM166 2006 This is a 1-ply Residential walking belt, some sellers will try to sell you a 2-ply belt (claiming better quality) for your treadmill, which is not recommended for treadmills with small motor. Since it can cause stress and overheating of the motor. Bundle: Treadmill Running Belt + Fasteners + LIMITED LIFETIME WARRANTY. Prelubricated with 100% Silicone SPECIAL OFFER: FREE SHIPPING in USA (Excludes: HI,AK, PR, GU, VI ) This is a high quality product Fabricated IN USA