Based on this product's specifications, here are some alternatives and similar models
Chimney Cleaning Ball MEGA 12781 — 0.75 kg weighted sweeper for flue and chimney blockage removal
Summary description:
MEGA chimney cleaning ball model 12781 is a 0.75 kg weighted sweeper designed to dislodge soot and blockages in flues and chimneys. The product is intended for manual or aided passage through ducts to remove deposits and improve draft. Suitable for maintenance of residential chimneys and heating systems where a compact, weight-driven cleaning aid is needed.