This Kit comes with Body Centred Cubic unit cell Molecular model . Kit consist of BCC unit cell model that can be used to understand solid state and inorganic chemistry . Its very useful model which helps in understanding 3 D very easily with all types of Solid state models required to study solid state chemistry. Must for science students, teachers & researchers. Please note that models can not be shipped as assembled unit but it will come with Manual and pictures for helping and assembling models .