The Toro 106-5813 V-Belt Traction helps transfer engine power to the traction drive system for smooth and reliable mower movement. Designed as a replacement traction belt, it works with the pulleys and drive components to transmit rotational power, allowing the mower's self-propelled system to operate properly. Proper belt fit and tension help reduce slipping, support consistent power... https://www.wholetoolbox.com/toro-106-5813-v-belt-traction/106-5813.html