1-1/2" x 1/2" and a 1/8" thick with a 3/16" hole. Available in assorted colors only. Currently in Blue and Purple ONLY. Best for small birds and timid chewers. The holes are also perfect for Light and Medium Hemp Cord, Plastic Lacing or 1/16" Round Leather Laces. These 1/8" Balsa Slats are not cut to their standard size or the hole is not drilled in the center. We doubt your birds will notice the difference.