Our bulk pack of 12 bird feeders comes complete with wooden parts, nails, sandpaper, two suction cups (to mount on a window) and instructions. You get to nail it together - paint it- hang it and add the seed. A great first project. Bulk packed. 6in x 6in x 4in. Wolf Ach 5d & elective 13e. Wooden parts have pilot holes for nails. We feel that glue just takes too long to dry so all our kits use nails. Also children need to have the opportunity to learn to use hammers and nails as a life skill.WARNING: Choking Hazard Small Parts and Sharp Points. Intended for children 6 to 12 years.