Based on this product's specifications, here are some alternatives and similar models
Putty knife Topex 13A545 450 mm, stainless steel blade, long handle
Summary description:
Putty knife Topex 13A545 with a 450 mm stainless steel blade designed for applying and smoothing filler, joint compound, plaster or adhesive. The long rigid blade provides even spreading on walls and ceilings; suitable for renovation, drywall finishing and general construction tasks. Durable stainless steel resists corrosion and is easy to clean.