Is your upright vacuum losing suction or the brush roll just stopped spinning? Chances are, the drive belt is worn out or broken. This KEEPOW 13-pack has you covered for years! These are high-quality round rubber belts that are direct replacements for part numbers 30563A and 30563B. They fit a HUGE list of Sanitaire and Eureka upright vacuum models (like the popular SC679, SC688, C2094, and dozens more – check the list in the description or your vacuum's manual to be sure). Having a multi-pack is genius because belts are a wear item; experts recommend changing them every 3-6 months for peak cleaning performance. These belts are flexible and durable, designed to get your vacuum's beater bar spinning powerfully again. It's one of the easiest and cheapest maintenance tasks you can do to keep your vacuum working like new. If you're unsure about compatibility, just message the seller with your vacuum's model number. A practical, money-saving pack for any homeowner.