Based on this product's specifications, here are some alternatives and similar models
Hammer Proline 12659 — 10 kg sledgehammer, single-piece, metal head
Summary description:
Proline 12659 is a 10 kg sledgehammer designed for heavy-duty striking and demolition tasks. Supplied as a single unit, it features a durable metal head and a handle suited for delivering high-impact blows. Suitable for construction, masonry, breaking concrete, and other professional or DIY demolition and reshaping jobs.