ITEM NAME:Scientific Laboratory Slide Rheostat Variable Resistor 200 Ohms 1.25 Amps Description: - High quality material, durable and safe. - Scentific Laboratory 200 Ohms 1.25 Amps Sliding Rheostat Variable Resistor for Physical Electrical Experiment Equipment. - Great for school teaching tools and lab supplies. - Material: Iron - Size: Approx. 21*9*5cm/8.27*3.54*1.97 inch Package Included: 1 Piece Sliding Rheostat.1 Piece Sliding Rheostat. - Great for school teaching tools and lab supplies. - Size: Approx.