Our Little Balsa -n- Spools has balsa slats throughout this toy and measures 1/4" thick x 1/2" wide x 1.5" long. The spools measure 3/4" high x 1/2" dia. and the wooden wheels measure 3/4" dia. x 3/16" dia. Pony Beads at top and bottom of toy and has colored raffia paper tied in between each area. The overall toy measures approx. 8" long x 4" wide. Comes with one nickel plated pear shaped quick link for hanging. Good for birds from finches, canaries, lovebirds, parakeets, parrotlets and alike.