Here's a great toy, designed especially for those birds who are hard on their toys and now comes in all natural parts or regular. Made entirely out of stainless steel chain, nuts, and bolts, it is completely safe for tough birdies. The base is a one foot chain consisting of half inch links. Mounted through the chain are four 3 inch bolts that hold various plastic and wood pieces for fun chewing and destroying as well as four stainless steel washers. All pieces are free moving on the bolt and held onto the bolt with a stainless steel locknut that even the most talented of mechanical parrots cannot remove. They are removeable by humans with two pairs of vice grips or pliers. Refill kits of the plastic and wooden pieces are also available.