supply of procurement of light weight heavy duty electric portable drill machine etc. , light weight heavy duty electric portable drill machine having capacity 6 mm dia. in m.s sheet and compreg sheet, with (1)input power 350-500w (2)rated voltage - 110v input (full load),(3)no load rpm in between 0-3400 rpm with variable speed, (4)drill torque 3.5 nm(5) nature of supply 110v, 50 hz, (6)total weight 1.5 kgs. (minimum),(7) body of the machine should be made of high strength polymide (nylon-66) with 150 kilojules/ sq. mtr. with auto cut-off carbon brush and spare one set carbon brush one set of chu ck and key with each set of machine to is: 4665/1984 of bosch/hitachi/fein/milwakee make preferable. [ warranty period: 30 months after the date of delivery ] ]