Gray roof slate tile size:40*20,40*25,50*25, ... square,triangle,U Roofing slate, roof slate, natural slate, slate roof, black roof slate, roofing tile, cheap slate, nature slate, slate roofing, slate roof,roofing slate tile,stone coated roof ... shape etcholewith drilled hole,w/o hole Natural roofing slate is with beautiful natural venations,headline your house. Natural Roof Slate,Cheap Slate Roof