GRK brand Caliburn concrete screws. Handy
Pak contains 50 screws, each with dimensions of 1/4 by 1 3/4. Also
included is a GRK concrete drill bit, dimensions of 3/16 inch by 4
1/2 inches.
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Caliburn screws are designed for use in concrete. The unique thread
design reduces the difficulty of driving the screw and the Climatek
coating prevents corrosion.
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