I found that some of the longer containers that are included in the MicroClone kit, the plastic is too brittle and when you push it into the container, they crack and break, nearly all of the containers were cracked, and contaminated with fungis and had to be thrown away.
I still think that the kit, is a good starter kit, it helped me overcome the fear and uncertainty around Tissue Culture, I now know the basics and can move on to more advanced techniques if I so choose.
Josh Melnick's Biology Blog 