Based on this product's specifications, here are some alternatives and similar models
Corner connection plate DMX Angle KL1 50×50×35×2.5 mm for structural joins
Summary description:
DMX Angle KL1 is a corner connection plate measuring 50×50×35×2.5 mm designed for joining structural elements at right-angle corners. Made for reliable mechanical fixation, it provides stable support where two panels or profiles meet. Suitable for furniture, shelving, frames or light metal and wood assemblies requiring precise corner reinforcement.