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Umbrella Anchor for Hollow Block Increased holding values over a typical screen tubes Extention Tubes for use with Piston Plugs Avilable in 6 foot sections for easy cutting Piston Plugs Available for anchor diameters 5 8 quot through 1 1 4 quot Hole Plugs Available for anchor diameters 3 8 quot through 1 1 4 quot CHOOSE YOUR OPTIONS