Used for medium load and low quality concreate
With the easily expanding sleeve it provides to safe fastening
Electro galvanized against corrosion (plating thickness 5-10 micron)
Sleeve anchors are the most versatile masonry expansion anchors because they can be used in a variety of base materials, including concrete, brick, and block. They are available in a wide variety of d http://www.zhenyafastener.com ...
Come From JiangSu Zhenya Special screw co.,ltd.