Upgrade your TORO Low-Wheel Recycler Mower with this genuine 21"/22" Rear Wheel Drive Belt, model number 38991. This belt is specifically designed to ensure optimal performance and longevity for your mower, compatible with a range of TORO models. Crafted with precision, the belt measures 21 inches in height, diameter, length, and width, making it a perfect fit for your machine. It's engineered for use with gas-powered mowers and comes as a single pack, so you can easily install it for a seamless fit. Keep your lawn mower running smoothly with this essential replacement part.if you have any questions just send us an email. Thanks for looking!