Based on this product's specifications, here are some alternatives and similar models
Door handle for stable/gate, Home It, model 20550, matte black, screws included, fits 40–90 mm, zinc-treated carbon steel
Summary description:
Home It door handle model 20550 is a matte black handle designed for stable gates or doors. Made of zinc-treated carbon steel, it fits door or gate thicknesses from 40 to 90 mm. The product includes mounting screws. Intended for practical use on farm gates, stable doors or outdoor wooden/metal doors where a durable, corrosion-resistant handle is needed.