A chipped limestone ranging in size from 5/8′′ to 1½”. This clean, chat free stone is designed to lay flat & pack tight while allowing rainwater to permeate through to the ground below. Commonly referred to as #57 Stone due to its mixture of stone sizes. This rock is ideal as a finish stone for driveways, as a long-lasting stone mulch in flowerbeds, behind retaining walls, and for residential drainage control.