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The Calk-In is a pre-assembled precision cast calking type machine bolt anchor which can be used in concrete, block, brick or stone. The cone is open-bottomed to allow for the use of a slightly longer bolt than on closed-bottom anchors. The cone is also designed easy screw starting. The anchor consists of a calking sleeve and an alloy internally threaded expanding cone with a series of ribs. The vertical ribs prevent the cone from turning in the sleeve as the anchor is tightened. |