Description: High transparency allows you to see every step of your operation. The characteristics of its changeable resistance makes it can control circuit. The adjustable characteristic makes it can be used as a fixed value resistor or as a variable value resistor. Exquisite and strict workmanship makes its quality better. Made of metal and insulating board material, it is very durable to use. The length of this product is 16.5cm, the width is 5.5cm and the height is 3.5cm. It is suitable for laboratory, physics class, science teaching, school, students and so on. Item Name: Sliding Rheostat Material: Metal,Insulating Board Maximum Current: 3A, 2A, 2A, 1.5A Product Specifications: 5, 10, 20, 50 Features: Insulation, Fine Workmanship, Easy to Use Size Details: Size: 16.5cm x 5.5cm x 3.5cm/6.5" x 2.17" x 1.38" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Sliding Rheostat