This yarn holder is made by my father. It holds any size skein or center pull ball of yarn or a spool (with 1/2 inch center). You can pull the yarn freely without the skein flipping around on the floor and getting tangled. It has a clear finish. Because of shipping, there is one assembly step - screw the set screw up and into the post. Other than that, it is ready to use when you receive it. Just put the post on, put your yarn on the post and knit or crochet away. Diminsions: 6x6x11. Yarn not included.