This Eisco Labs Resistance Unit Kit contains 10 individual resistors — two each of 10, 20, 50, 100, and 200 ohm values — each housed in its own plastic enclosure. Each unit measures 5 x 5 x 4 cm with a maximum rating of 3.0V and 0.3A. Connections accommodate both 4mm stackable plug leads and standard screw (spade) terminals. Ideal for physics classroom demonstrations and electronics laboratory experiments exploring resistors in series, resistors in parallel, voltage dividers, Ohm's law, and Kirchhoff's laws. Connecting leads sold separately.