Based on this product's specifications, here are some alternatives and similar models
Vacuum Cleaner Hose replacement for models 519 / 619 / 919 — No name (MPN KAT00331)
Summary description:
Replacement vacuum cleaner hose compatible with models 519, 619 and 919. Designed as a direct consumable part for wet/dry or household vacuum cleaners that use a flexible suction hose. Provides standard flexible connection between the appliance body and wand or nozzle. Suitable for routine maintenance and repair when the original hose is damaged or worn.