Bolt, Nut, Carriage Bolt manufacturer / supplier in China, offering Custom Black Roof Screws Wood Screws, 3/16"X1-3/4 etc. Concrete Screw Anchor, Blue Flat Head, for Anchoring to Masonry, Block, Brick, or Stucco, Thread Size1/4"3/8"5/16" Zinc Plated Large Diameter Concrete Screw for Anchoring to Masonry, Brick or Block and so on.
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