Flexible couplings consisting of two sprockets provided with robust two-strand chains specially designed for couplings. Can be used for all general power transmission applications OFFICE : ALVA PRIMA Toko Alat Teknik LTC Glodok Lt.2  2  Blok  C 27 No 6-7   dan BLOK C 41 No.1 JL.  Hayam Wuruk  No.127  Glodok – Jakarta Barat Phone  : 021 62320192 / 021 62320191 Email     :  alvaprima @ cbn.net.id