6x6 Bison® Tile, Ceramic, Textured Surface Matte with Spacers, Bison, 6.0625" x 6.0625" x .25"�. Suitable for a variety of artwork imprinting projects, great for decorators, contractors or designers to use as a reliable choice in projects. Production for these tiles requires the use of an 1/8" Green Heat Conductive Rubber Pad and a Nomex felt pad, 1/8" thick and at least an inch larger than the tile, sold separately. This tile does have lugs.