Our most popular series includes 8 models to show the complete stages of development. All models are mounted separately on a stand.1st Month Embryo - Weight: 0.44 Pounds 2nd Month Embryo - Weight: 0.66 Pounds 3rd Month Embryo - Weight: 0.66 Pounds4th Month Fetus (Transverse Lie) - Weight: 0.88 Pounds 5th Month Fetus (Breech Position) - Weight: 0.88 Pounds 5th Month Fetus (Transverse Lie) - Weight: 0.88 Pounds 5th Month Twin Fetuses (Normal Position) - Weight: 1.32 Pounds 7th Month Fetus - Measurements: 5.91" x 12.60" x 10.63" (15cm x 32cm x 27cm). Weight: 1.32 PoundsItem L10 Overall Complete Set Weight: 7.05 PoundsPlease Note: Anatomical Charts & Models are manufactured by various companies. Items on your order may ship from separate locations. Each manufacturer has their own order processing time. It may take 24-72 hours for your order to be processed and packed for shipment.Product Manual