A porous and ideal alternative to tarmac, our Obsidian colour will allow water to drain through giving a huge advantage by reducing drainage costs. This striking black twinned with a stunning shine is perfect for resin bound borders or full driveway systems.
- Rock Type: Basalt
- Rock Shape: Angular
- Slip Resistance (PTV): 80
- Ideal For: Driveways, Paths & Patios
- Hardness Rating: 5
- Overall Performance: 5
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