1.Hard wearproof material 2.Basalt black 3.Quarry owner Basalt 1.Paver,stair,cut-to-size2.years experience Processing this material. chiselled,sandblasted,waterproof,honed,brushed.3.Delivery time is short. 4.Dimension:1cm 2cm 3cm 6cm 8cm thickness. 120cm Length. Welcome to contact us.