a fixture is provided for holding a hollow , cylindrical device from an inside surface that includes a plastic collar component and a main frame fixture insert molded into the plastic collar component . the fixture may include a cross - wire adapted to : loop over a section of the main frame fixture ; traverse a space between the main frame fixture and the plastic collar component ; and loop over a section of the plastic collar component . an apparatus is provided for holding a cylindrical device having an open interior and at least one open end . the apparatus includes an engagement arrangement including at least two activatable projections on a distal end and a base attached to a proximal end of the engagement arrangement . the projections move radially when activated .