A classic rod & connector toy that stimulates creativity and provides hours of fun for kids. Limitless building possibilities. Pieces are made of select hardwood with a non-toxic finish and are easy to manipulate. 16 Canister. Set contains: connector rods in 5 different lengths, barrel connectors, fan blades, special spools, caps, regular spools, spinner spools, and pulleys. Also comes with an instruction sheet. Ages 4 and up.