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It serves as an excellent anatomical model for educational purposes
The valves can also show the opening and closing
vocal sounds
and Environment
298 (conical)
Single D Cell Battery Holder It serves as an excellentIncluded: 5 x Heavy Duty Single D Cell Battery Holder Cell Holder. High quality easy to load and easy to remove cell holder for holding standard D size batteries. Improved accuracy and robustness. It may also be used for the parallel or series combinations of two cells. If you need custom order with different sizes design, please contact us. Safely Packaged to avoid being damaged during transportation.
