... Step Riser,Step rizer, model step,double step,2cm,3cm,3+3cm,4+4cm Finishing:Polished,Flamed,Honed,Bushhammered,Sandblaste Stone Step Riser SpecificationStone step ... 2cm and 3cm, double step 3+3cmFinishPolished,Flamed,Honed,Bushhammered ... customer.Ordinary do 3+3cm thickness double step.The fiber and glue are from Germany. ...