bids are invited for 7-hole aperture d7/10/15/20/30/60/120µm mo/au plate having 7 holes of diameter 7um,10um,20um,30um,60um,120um beam blanker with cable it is used to apply 8kv to blank the beam. it fits in the beam path. it is a hv cable assembly with beam blanking plate extractor aperture mo d400µm mo plate with 400um aperture it helps to remove unwanted signal coming from filament. cathode tfe 174c it is a filament which generates electrons. copper gasket, dn 100 cua100-crp it is a cu o ring which helps to seal the vacuum between gun head and column. al-sealer small (liner tube) it is a al o ring which helps to seal the vacuum between liner tube and column. front aperture 40µm it is a mo plate having 40um aperture in it. copper sealer dn 16 cf cu pf501401-t it is cu o ring which helps to seal the vacuum between bb and column total quantity : 8