supply of 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.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.,supply of electric track drilling machine similar to model no. ralliwolf-14130 make- ralliwolf, bosch, black and decker, cumi hammer and tiger firms with suitable horizontal stand with attachments t o drill holes of various size up to 7mm to 13mm.warranty minimum one year for track ckt drill. inspection b y representative of sr. dste/sbp. [ warranty period: 12 months after the date of delivery ] ]