Based on this product's specifications, here are some alternatives and similar models
Spanner wrench NEO tools 09-655, single-piece, 48 g
Summary description:
NEO tools 09-655 is a single-piece spanner wrench designed for tightening and loosening fasteners in confined or specific-fit applications. The pack contains one spanner wrench weighing 48 g. Compact and lightweight, it is suitable for workshop use, maintenance tasks, and field repairs where a small, precise wrench is required.