The Toro 135-5441-05 Lawnmower Left Caster supports the left-side wheel assembly and helps maintain stability and maneuverability on compatible equipment. It allows the caster wheel to move and turn as needed, supporting smooth handling during operation. This replacement part can be used to replace a worn or damaged caster and restore proper equipment movement. Check your equipment mo... https://www.wholetoolbox.com/toro-135-5441-05-lawnmower-left-caster/135-5441-05.html