Based on this product's specifications, here are some alternatives and similar models
Corner reinforced plate DMX KPL4 70×70×55×2 mm — metal angle bracket for structural reinforcement
Summary description:
Reinforced corner plate DMX KPL4 with dimensions 70×70×55×2 mm provides durable metal reinforcement for joints and corners. Designed as an angle bracket, it helps strengthen frames, furniture, wooden constructions and light structural connections. Simple to install with screws or bolts, it offers reliable support and improved load distribution at corner joints.