Large stainless steel skewer with stainless steel quick link holds sets of pine pieces and small ABC blocks, and a section of 1/4" leather on the bottom. Our Nanday Conure, Lucy, loves these size blocks and we find that a skewer is the safest way to hang them! So when your bird is done with the parts, you can buy more to refill or use the skewer to make your own toys or use to hang fruits and veggies.