Features:Made of quartz transparent glass, high temperature resistance, better insulation performance.Old bulbs can be replaced directly. convenient.For professional use, connect the power source only by qualified and authorized personnel.Specification:Material: glass + electronic componentsSize: 1.65*0.2in/4.2*0.5cmColor: as picturedVoltage: 220VPackage Includes: 20pcsNotes:Please allow minor errors due to manual measurement.The colors may be a little difference for the different monitor display.