Based on this product's specifications, here are some alternatives and similar models
Flat wrench Dedra 21 x 23 mm model 1480P — open-end hand tool
Summary description:
Flat (open-end) wrench Dedra model 1480P with dual sizes 21 mm and 23 mm. A manual hand tool designed for tightening and loosening hex nuts and bolts of the specified sizes. Made for general mechanical, automotive and household use where access requires a slim-profile open-end wrench. Suitable for repair, assembly and maintenance tasks.