Set of Trocars and Cannulae in Handle This is a set of four trocars and cannulas stored in the case/handle. The case features a patterned surface to ensure a secure grip and has a detachable lid. When opened, it reveals four trocars and cannulas, each fitting into the next as they are of different sizes. They can be secured by screwing into the handle. The set shows signs of corrosion. 1925-1975