supply of 1) battery operated rail drilling machine capacity from 18mm to 32mm with all required drill bits from 18 mm to 32mm size as per rdso specification no.tm/sm/468 dt.31.03.2014 second revision 2020. 2) battery operated chamfering kit suitable to chamfer hole of dia 7 mm to 32 mm in rail, rest features as per rdso specification no.tm/sm/336 (rev 01 of 2023), warranty upto 12 months, atleast.1) battery operated rail drilling machine capacity from 18mm to 32mm with all required drill bits from 18 mm to 32mm size as per rdso specification no.tm/sm/468 dt.31.03.2014 second revision 2020. 2) battery operated chamfering kit suitable to chamfer hole of dia 7 mm to 32 mm in rail, rest features as per rdso specification no.tm/sm/336 (rev 01 of 2023), warranty upto 12 months, atleast.,battery operated chamfering kit suitable to chamfer hole of dia 7 mm to 32 mm in rail, rest f eatures as per rdso specification no.tm/sm/336 (rev 01 of 2023), warranty upto 12 months, atleast. [ wa rranty period: 12 months after the date of delivery ] ] , battery operated rail drilling machine capacity from 18mm to 32mm with all required drill bi ts from 18 mm to 32mm size as per rdso specification no.tm/sm/468 dt.31.03.2014 second revision 2020. [ warranty period: 30 months after the date of delivery ] ]