Bradstone Burnt Umber Calibrated Blended Natural Sandstone (600x900x18mm) Blended Natural Sandstone calibrated patio kits are hand cut and hand dressed giving a more rustic finish and come in four specially selected colour blends. The slabs are lighter in weight than standard natural sandstone, making them easier to handle and ideal for those budget projects that still desire a natural product. Specification:  Number of Pavers: 28 Size of Pavers: 600x900x18mm m2 of Pack: 15.75m2