Based on this product's specifications, here are some alternatives and similar models
Angle bracket DMX KSO3 60x60x60x2mm galvanized
Summary description:
DMX KSO3 angle bracket, dimensions 60x60x60 mm with 2 mm material thickness, galvanized finish. Designed to join or reinforce right-angle connections in metal or wood constructions, shelving, frames and supports. Provides corrosion resistance from the galvanization and stable mechanical support for DIY, construction and repair tasks.