★MAXIMUM LOAD - M6 heavy duty concrete wall hook, they can approximately hold 264lb/120kg weight. ★TAINLESS STEEL - made of high quality 304 stainless steel, suitable for indoor, outdoor, it's not rust even in humid environment. ★WIDE APPLICATION - Used in concrete & masonry. ★POWERFUL FASTENING - The crimped sleeve will firmly grip the wall to ensure that anchor hook does not fall off. Special design is stronger than ordinary screws bolts.