Aluminum resistance (golden aluminum ) series, the is made of aluminum alloy; A heat radiating groove on the surface. Small size of large power; High temperature resistant; Strong overload capacity with high weather resistance. High precision, low standard induction resistance, high stability, strong architecture. Good flexibility,multiple choice, good for machinery protection, more convenient for users to install. Scope of Application: aging test power supply; inverter; automation equipment; ACOUSTICS; frequency divider and high requirements in bad industrial equipment use. Type: 4 Ohm 4R 100W Watt Power Metal Case Wirewound Resistor Color: Gold Size: 60mm x 21mm x 16mm Package includes: 1X 100W Watt Power Metal Case Wirewound Resistor Note:Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.