... with good quality and best price. NMRV worm speed reducer.1 high quality alloy,appreance elegant,efficient raditor,high ... -surfaces,hollow output shaft,various input and output type,conjoin other transimission machinery easily3 small size,contricition ... without flange063Centre-to-centre spacing of worm-gear speed reducer30ratioVSDouble input shaftF1(FA)Flange putput shaftASSingle output ... reducer