The Nikon BCB-II is a vintage flash unit designed for Nikon S and late-production “synced” M rangefinder cameras. Built for dual contact flash sockets, it offers a classic accessory solution for early Nikon shooters and collectors. This set includes original components along with carefully restored parts for continued usability. Includes: Main flash unit - cosmetic crack on top of housing (does not affect function) 6" reflector - accepts Edison-size flashbulbs 5" reflector - accepts #25-size flashbulbs Battery/capacitor insert - includes original capacitor, 25V battery not included (out of production), untested Penlight battery insert - modern AAs do not fit, untested but expected to work with correct vintage batteries Handle extension - fits 3x D-cell batteries, tested and working Camera bracket - rubber padding replaced with custom 3D-printed TPU part Sync cord - rebuilt with 3D-printed SLA parts to replace degraded moldings Instruction manual - original Please note some components remain untested due to battery compatibility. Camera and flash bulb not included, only shown for photo purposes.