supply of primary vertical d er. , primary vertical damper for vb trainset to m/s itt koni drg. no. off16728 rev-c or m/s zf drg no 401300004470 or any other firm whose drawing accepted by rdso. item to be as per m/s ec engineering damper specification no mt18br2 001466-08. special condition : suitable packin g to be done to prevent damage during transit, unloading and rust prevention during storage. [ warranty period: 30 months after the date of delivery ] ] , secondary vertical damper for vb trainset to m/s itt koni drg. no off16730 rev-b or m/s zf drg no 401300004471 or any other firm whose drawing accepted by rdso. item to be as per m/s ec engineering damper specification no mt18br2001466-08 special condition : suitable packi ng to be done to prevent damage during transit, unloading and rust prevention durin g storage. [ warranty period: 30 months after the date of delivery ] ] , horizontal damper for vb trainset to m/s itt koni drg no. off16729 rev-c or m/s zf dr g no 401300004472 or any other firm whose drawing accepted by rdso. item to be as per m/s ec e ngineering damper specification no. mt18br2 001466-08. special condition : suitable packing to be done to prevent damage during transit, unloading and rust prevtion during storag e. [ warranty period: 30 months after the date of delivery ] ] , yaw damper for vb trainset to m/s itt koni drg no off16809 rev-d or m/s zf drg no 4 01300004473 or any other firm whose drawing accepted by rdso. item to be as per m/s ec enginee ring damper specification no mt18br2 001466-08. special condition : suitable packing to be do ne to prevent damage during transit, unloading and rust prevention during storage. [ warranty period: 30 months after the date of delivery ] ]