supply of contact cleaner for electrical & electronics micro contacts for emu's & locos. brand: o ks-2621/2 or e.c. clenear or valex make jm 501 or equivalent. material to be supplied in aerosol can o f minimum 350 ml to maximum 500 ml in size., spec/drg no- brand: oks-2621/2 or e.c. clenear or v alex make jm 501 or equivalent [ warranty period: 12 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]