Roller cutting tool for glass and oil, made of tungsten/45 steel, with a cutting handle for diamond minerals

Features: 1. 100% brand new and high quality. 2. The product uses oxidized and insulated wire, which is tightly wound on the porcelain tube and fixed to the protective metal bracket. 3. It acts as a control circuit by changing its own resistance. 4. This product is applicable to circuits below 50Hz, 380V, and below DC 440V. 5. It can be used as a current and voltage regulator for laboratory research and demonstration, as well as for excitation and speed control of power generation equipment and DC motors. Specifications: Features: 1. 100% brand new and high quality. 2. The product uses oxidized and insulated wire, which is tightly wound on the porcelain tube and fixed to the protective metal bracket. 3. It acts as a control circuit by changing its own resistance. 4. This product is suitable for circuits below 50 Hz, 380 V, and below 440 V DC. 5. It can be used as a current and voltage regulator for laboratory research and demonstration, as well as for excitation and speed control of power generation equipment and DC motors. Specifications: Condition: 100% Brand New Current: 1.5 A Resistance: 50 Ω Weight: Approx. 340 g / 12.0 oz Package List: 1 * Sliding Rheostat