Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended G7000-20444 Extractor Lens, 3mm, for 7000B QQQ 6 505,92 Kč G3170-20540 CI Lens Insulator 5 546,88 Kč G3170-20530 Lens insulator,597X MSD 15 629,76 Kč