Screws, Bolts, Nuts manufacturer / supplier in China, offering Flat & Hex Head Masonry Block Brick Cement Screws and Anchors, 3/16" X 1-3/4" Blue Hex Head Concrete Screw Anchor Kit for Anchoring to Masonry, Block or Brick, 1/4" X 1-1/4" Flat Head Phillips Diamond Tip Concrete Screws to Anchor Masonry and so on.