Specification Brand : 3B Scientific BulletPoint1 : Each stage can be removed BulletPoint2 : Pregnancy in 12 stage BulletPoint3 : Purposefully used for teaching BulletPoint4 : Country of origin: Germany BulletPoint5 : Easy to clean, and the inserts can be completely removed ExternallyAssignedProductIdentifier1 : 755984392206 ExternallyAssignedProductIdentifier2 : 0755984392206 ExternallyAssignedProductIdentifier3 : 849230001148 FdaDeviceClassification : iv FdaIndicationOfUse : otc_and_rx FdaInstructionsForUseType : consumer FdaLabelType : consumer GpsrSafetyAttestation : 1 ItemName : 3B Scientific 1001257 Embryonic Development in 12 Stages Model ItemPackageDimensions_Height : 3.74015 inches ItemPackageDimensions_Length : 26.7716 inches ItemPackageDimensions_Width : 14.9606 inches ItemPackageQuantity : 1 ItemTypeKeyword : animal-anatomical-models Manufacturer : American3B Scientific - ModelNumber : 1001257 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : 1001257 ProductDescription : Feature This model can be used as an intuitive teaching aid to enable students to understand the distribution of bronchioles in the lungs and the division into terminal bronchioles, as well as the relationship with the alveoli. Specification Name: Alveolar enlargement model Material: PVC Size: 26x15x35CM Weight: 2 kg Package 1*Alveoli magnification model