Sanitaire vacuum belts are flexible, durable, and easy to replace. Replacing a worn or damaged belt is necessary to maximize the performance of your vacuum cleaner. Check the belt periodically for signs of wear that can result from normal use. The tighter or newer the belt, the better your vacuum will perform. This Sanitaire Replacement Belt fits the Sanitaire Quickboost Cordless Vacuum SC7500A (Item No. 1111023).