Tenders for Supply of Carbon Brush For Servo Motor Of Csc Of Mr-300 Series Ac Rakes Of Kolka Ta Metro To Metro Railways Drawing No. Mr/Poh/7-5-0242. As Per Drg.No. Mr/Poh/7-5-0242. Sp Ecn: Metro Railways Drawing No. Mr/Poh/7-5-0242. Warranty Period: 30 Months After The Date Of D Elivery