This package contains three belts to fit all Miele Powerhouse and Powerhouse Plus uprights. They are flat stretch type belts which should be changed at least once per year to keep your upright cleaning well. These belts are for use on Miele models S170 - S179 and models S183 - S185 Powerhouse uprights. This package of belts replaces the former package #S01B4100.   For similar products see our list of Miele Vacuum Supplies. Show Less