Standard Resistor Set with the following values, delivered in hard case : 1 Ohm, 1 kOhm, 1 MOhm, 10 Ohm, 10 kOhm, 10 MOhm, 100 Ohm, 100 kOhm SR1 resistors are designed to be accurate, stable working standards. The SR1 features binding posts on the top and removable banana plugs on the bottom. It features a unifilar winding on a flat mica card to minimize both series inductance and shunt capacitance. These connections facilitate 2-wire or 4-wire use. A durable aluminum case provides electrostatic shielding.