Thank you for viewing. White and gray block parts. 100 pieces of each color. These were played with by a child, so please understand that there may be some scratches and dirt. Also, I received these from someone else, so I'm sorry, I don't know if they are genuine products, but please take a look at the photos and consider purchasing. 1 stud x 100 x 2 colors (white, gray) No pets, no smokers. Returns are not accepted.