Check your eligibility criteria for tender Supply of Hard Disk Driver Hdd 4Tb Surveillance Dvr Hard Drive For Crew Voice And Video Recording S Ystem Cvvrs For Electric Locomotive To Rdso Spec. No. Rdso/2015/El/Spec/0118, Rev-0. Equivalent To Th E Product Photo Attached. Make - Wd/Toshiba Or Suitable For Hikvision Complete Cvvrs, Size Of The Item Is 100Mm X 7Mm X 70 Mm . Product Should Be One To One Replaceable In Terms Of Size And Connectors ; With Seag Ate 2 Tb Barracuda Sn: Wdznk27e Drive . Note:- Sample Should Be Got Approved Before Bulk Supply. Warrant Y Period: 30 Months After The Date Of Delivery