The Ateco #53 Cross Decorating tip has a fine X shaped opening that is approximately slightly under 1/4". This tube is for doing very fine detail work piping borders, stars, x's or flower centers. This piping tube fits the Ateco standard coupler.
Piping tips are best cleaned by soaking them in hot soapy water and using a Tip Brush
to thoroughly clean the interior, rinse & air dry.