This kit contains a collection of arthropods. There is 1 specimen block in this package (5 ¼ x3 ½ x 1 in.). Specimens are preserved and encased in clear resin material. They can be observed from every side to see details. Specimens include: Millipede (Spirobolus bungii), Shrimp (Penaeus chinesis), Grasshopper (Oxya chinensis), and Centipede (Scolopendra subspini). Teacher information guide, student activity sheet, and fact sheets are included. Size of product is 8.25x4.75x1.5in.