The product is a lot of 30 new old stock (NOS) Rotary lawn mower belts, specifically designed for Murray, MTD, and AYP models. The belts are 1/2 inch wide and are ideal for maintaining your lawn mower's performance. With a California Prop 65 warning, it is important to handle and use outdoor power equipment with care to avoid potential health risks associated with lead and other chemicals. These high-quality belts from Rotary are a reliable choice for keeping your lawn mower running smoothly.