The wire tool in the Chinese set is difficult to learn, but once you get it, you won't want to use a grab-and-pull tool. Learning to manipulate a flexible thread takes time, but it's an investment in your skill set. With the straw as with the polyp remover, the testicle may be crushed rather than cleanly removed. Part of the testicle can be pulled into the straw or tube, causing it to rupture.