(2) Belt Sets for Bissell ProHeat 2X (203-6688 & 203-6804) Package of (2) Sets of belts for Bissell ProHeat 2X models. You will received (4) Belts total. (2) Bissell 203-6688 belts (smaller belt). (2) Bissell 203-6804 belts (larger belt). Replace belts every 6 to 12 months to ensure optimum performance.