This is a collection of set pieces from the photos. I counted and it looks like there are over 800 pieces in total. The crocodile pack is unopened. Hammer Shaft x 1 Hamacron Mini Wheel x 4 Hamacron Mini Shaft x 1 Includes special parts. There are also about 10 crystal parts. There are two sheets with instructions. The math set text cards are also included, but one corner is torn and cannot be bound with a ring as is. (There is no problem with viewing the instructions) Please consider this item, understanding that it is a used product.