Whether it's concrete, brick, or wooden walls, Our hinges work just fine. Bi-directional swinging design and automatic reset, saving your effort. 【New Upgraded】 Our upgraded swinging door hinges are made of ultra-high hardness 304 stainless steel, which is waterproof, rustproof and corrosion-resistant，and the load capacity is even better up to 50KG/110lbs.
eBay