Hook type Anchor Fastener for Hanging SwingBrass Finished Temperature resistance Usage Drill the pilot hole direct into material and substrate Variety of substrates Concrete Solid Natural Stone Marble etc Ideal For many more things You can hammer this fastener into various kinds of substrates be it concrete solid perforated or hollow bricks natural stone marble etc Themujtaba Gives you The Great Tool For Any House Office Just Take One And Use This Great Fastener Hook pack of 10 pcs