OCTURA 1400 SERIES 50MM DIAMETER BOAT PROPOne of the original props from OCTURA. These have a low 1.4:1 pitch to diameter ratio with a 3/16 bore for drive dog use. They are ideal for convetional underwater use. Most are made in glass filled plastic but Octura have recently produced a few of them in BeCu. These have found use on both IC motors and electric motors.