[Multi-Application]: These 3/16" x 1-1/4" concrete screws are ideal for variety of projects from concrete, masonry, mortar walls, furniture, courtyards to block, brick, etc. [Premium Material]: Made of 1022A Carbon Steel with Ruspert coating finsh, These screws pass salt spray test for 1000 hours, has superior rustproof, waterproof and anti-corrosion properties.
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