A comparison set of 5 human fetal skulls illustrating fetal development. The individual skulls are also available.nnSpecifications:nnProduct Type: ReplicanProduct Material: High-quality Polyurethane resinnIncluded in this set:nnReplica Human Fetal Skull – 20 weeks (BC-194)nReplica Human Fetal Skull – 29 weeks (BC-195)nReplica Human Fetal Skull – 31 Weeks (BC-180)nnReplica Human Fetal Skull – 32 Weeks (BC-181)nnReplica Human Fetal Skull – 40 Weeks (BC-182)nnProduct of Bone ClonesnnPlease be advised that this product is made to order and will require additional lead time. For further information about the availability and turnaround time of this item, please contact our customer service team at 1-800-659-SKULL.