Has become more

To begin with, both of these locking elements are able to work under high pressure, and in general in parameters are very close to each other. But at the same time, the ball crane has a number of distinguishing features, and first of all, this is the material from which it is made. If earlier it was produced from various non -ferrous metals, today the preference is given to steel, due to which the “ball” has become more durable and durable.