Specifications: Rheostat has good dissipation, high stability and long life-span. It is very suitable for school teaching tools and laboratory supplies. Made of premium material with fine workmanship, it is durable and safe. Children will learn the principle of 200Ω 1.25A sliding rheostat variable resistor. Sliding rheostats are widely used in power supply, transducer, elevator, arena audio and demanding equipment industries. Item Name: Rheostat Material: Metal Type: 5Ω, 10Ω, 20Ω, 50Ω, 200Ω Current: 5Ω: 3A, 10Ω: 2A, 20Ω: 2A, 50Ω: 1.5A, 200Ω: 1.25A Features: Durable, Adjustable Resistance, Easy to Use 5Ω Size: 16.5cm x 5.5cm x 3.5cm/6.5" x 2.17" x 1.38" (Approx.) 10Ω Size: 16.5cm x 5.5cm x 3.5cm/6.5" x 2.17" x 1.38" (Approx.) 20Ω Size: 16.5cm x 5.5cm x 3.5cm/6.5" x 2.17" x 1.38" (Approx.) 50Ω Size: 17cm x 5.5cm x 5cm/6.69" x 2.17" x 1.97" (Approx.) 200Ω Size: 21cm x 9cm x 5cm/8.27" x 3.54" x 1.97" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Rheostat