Based on this product's specifications, here are some alternatives and similar models
Adapter Karcher 2 M22IG-TR22AG for pressure washers, model 4.111-030.0
Summary description:
Karcher Adapter 2 M22IG-TR22AG (model 4.111-030.0) is a connector designed for pressure washer accessories with M22 internal thread to TR22 male thread conversion. It enables quick and secure coupling between compatible hoses, lances or tools, facilitating tool interchange and extending compatibility with different fittings. Practical for workshop and home cleaning tasks.