Great bird toy parts for the hardiest of chewers!!! Hardwood spool that measures just over 2" tall by 1.5" wide. Some people complained that the hole was too small so we enlarged it to 1/2" to fit up to our 3.0mm chain. Perfect for large birds (as shown). Or the original 3/8" hole is also available (not shown).  Available in natural or assorted colors.