This pre-lubed Sportsmith walking belt fits Horizon Fitness and Smooth Fitness SMT6.1P treadmills, serial#s TM113B*.  If it's minimal maintenance you want, this PVC belt with impregnated lubrication requires less attention to make things run smoothly.  All Sportsmith belts feature components that make the best when it comes to quality and performance.  A top feature of Sportsmith belts is the non-directional, finger splice seam.  This means you can install the belt in either direction.

*Some models with the same name use different parts. This is why you should always match your model#, SKU, serial# or details as provided. Model information is on a label attached to the frame, commonly at the lower front of the machine, near the power cord and/or main power switch.