System is permanently installed into an electrical panel, putting all lockout items at the point of need. Simplistic design offers great flexibility. Red arm locks off, green arm used to lock on. Two step installation process.Kit includes:• (2) 4” mounting rails• (1) 7.6” 480/600 volt red blocking bar• (1) 7.6” 480/600 volt green blocking bar• (3) Alcohol wipes