This product is an upgrade to the coping stones that can be purchased for them to be made with Glass Fibre reinforcement in the concrete mix, allowing them to be drilled into safely for fixing of Ballustrades.
In order to upgrade the stones in your order you need to order one of these upgrades per stone you are are purchasing.
Please note - this product can only be purchased alongside coping stones as an upgrade and is not a product that be purchased on it's own.