Based on this product's specifications, here are some alternatives and similar models
Nozzle for starmix vacuum SX414447 — ABS, 260 mm width, 35 mm diameter, black
Summary description:
Replacement nozzle for starmix vacuum (model SX414447). Injection-moulded from ABS in black, the accessory measures 260 mm in width with a 35 mm connection diameter. Supplied as a single piece, it fits compatible starmix vacuum hoses and is intended for general floor and surface cleaning where a flat, wide inlet is required.