... *30cm 2.color:black,green,rusty,grey 3.shape:rectangle,square,triangle,U shape Roofing slate, roof slate, natural slate, slate ... , nature slate, slate roofing, slate roof,black slate. Features and specifications:Edgechipped edge,sawn edgecolorblack,rusty,green,grey,mutilcolorsize(mm ... 8,8-10,9-12,12-15 and upshapeany shape,i.e.,rectangle,pentagon,scalloped shape etcholewith drilled hole,w/o hole Natural ...