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Designed to teach both series and parallel circuits. Made of plastic and holds 1 standard D battery (not included). Unit has male and female button snaps to allow instant connections with additional battery holders, in series or in parallel, without using leads.
If for any reason you are not satisfied with this item, it is eligible for a return, exchange, refund, or credit up to 180 days from date of purchase. Restrictions may apply. Returns & Exchanges Policy.