... gray, black, brown, green, red, or purple.grey roofing slate pencilClassificationSlate pencilItem NoSS-S-005FinishedHonedColorsGreyDelivery TimeTo the contractShapepencilFinished: Sawn ... suitable for commercial use such as blackboards, flagstone, and roofing tiles. Generally, tabletops. mosaic.Color:Brown,yellow,green,black and ... our website for more product information. grey roofing slate pencil