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4.5 3 F5 5 -M5 52 52mm m F52-M52mm M52*P0.75 M52*P0.75 M49*P0.75 M52*P0.75 63 φ57 RA5246B Adapter ring F5 5 -M4 52 49mm m F52-M49mm 3 M46*P0.75 M52*P0.75 F52 5 --M4 46mm 6 m F52-M46mm 4.5 4.5 3 RA5252B Adapter ring RA5249B Adapter ring 外観図 RA5246B/RA5249B/RA5252B ADAPTER RING 吉田産業株式会社 Copyright Y.I.C.