This is a used cutless bearing housing to take a 25mm diameter bearing and propellor-shaft. It is made of cast bronze, and takes a 50mm long bearing, which was rather short for our 1 metre long prop shaft, so we have changed to a 100mm long housing and bearing. It is still in excellent condition and will be fine for a short prop shaft, or a situation where there is not enough room for a longer bearing housing such as inside a rudder aperture on a long-keeler.