GATOR AQUA ROCK is manufactured to meet ASTM No. 9 requirements for permeable paver joint units. The calibrated gradation obtained from the fractured high-strength granite makes it the ideal product for the bedding course & jointing material to collect surface water run-off and help stabilize interlocking paver surfaces. We, at Alliance Designer Products, maintain our primary mission to offer quality products designed and formulated to answer all of your hardscaping needs. Contractors, dealers and manufacturers alike recognize the value of Alliance Designer Products, thus making us proud to proclaim that Quality Is Our Strength!