These pieces measure 2 x 2 x 12. We had these installed dark side up in a training room, so the colored sides look pretty much like new since they have not been directly stepped on. Included are edge pieces for all 4 sides of an 16 by 16 square. New ones like this sell for around 18 a package of 6 online. Must purchase entire lot of 64 pieces, dont want to break up the lot.