Basic 511 is a great introductory set to use the special Hamacron wheel parts. This set includes 650 pieces in 6 primary colours (Yellow, Red, Blue, Green, Black and White), as well as 30 special Hamacron parts. The special Hamacron parts (large wheels + shafts, mini wheel + shafts) enable a wider variety of movement and advanced building techniques. This set also includes a handy plastic storage case for on-the-go play. It includes an instruction guide to make 12 models including a dump truck, spinning carousel and Hamadroid.