Durable: Made of copper material with a high safety factor, designed for durability. Single pole single throw switch for making and breaking a single electrical circuit. Easy to use: Provides stability and clear visualization of electrical principles. Features screw terminals for convenient wiring and secure electrical connections. Low voltage: Maximum working voltage 36V. Suitable for low voltage DC power applications. Ideal for demonstrating circuit operation and electrical principles in eonal settings. Experimental use: Recommended for school laboratories to conduct basic on-off circuit experiments, supporting student learning in electricity and circuit fundamentals. For laboratory use only; not intended for household or residential wiring. Material: Copper. Color: Black. Contents: 10 x Single Pole Single Throw Knife Switch. Package includes only the items listed. Note: Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by up to +/- 1-3 cm.