tender for p bracket insulation set for irs type point machine as per specification no.-irs-40-84 or latestone set consisting (i) insulating plate (rh) as per drg no.s3265 - 01nos (ii) insulating plate (lh) as per drgno.s3266 - 01 nos (iii) insulating bush as per drg no- s23199 - 04 nos (iv) insulating washer as per drg no.s8640 - 08nos .