Dunis Granite Bollards provide protection while enhancing cityscapes, landscapes and entries with the highest integrity building material, solid granite. The low maintenance Granite Bollards are core drilled for easy installation over 4-, 6-, or 8-in. steel pipe. They feature double protection with epoxy bonding steel core to granite and are available in over 40 stone selections and in many finishes. Bollards can be ordered in all custom sizes, and fabricated as lasting fence posts, rail supports, gate posts, or with fittings for chains.