Applicable model: for SHARK NV752, NV751, NV400, NV340, NV500, NV501, NV502, NV505, NV552, UV560, NV650, NV450, NV470, NV472, UV795 series. If the head of your Shark vacuum cleaner has reduced suction power then your lower duct hose may be split and need replacing.
eBay