Collectible Thomas is a series of unmotorized TTTE toys. Five models are released every year.
The toys are made out of ABS, a type of plastic that is the same material as Legos. It's couplings are magnets made out of plastic. Yep, plastic. Also, just like Take-N-Play and Take-Along, there are only a maximum of wheels. For tank engines, it's eight, and for tender engines, it's ten. Thus, some wheels configurations have to be shortened. The only exception ever made was Gordon, Spencer, and Murdoch, who both have twelve wheels. Unlike most stationary TTTE toys that have to be moved manually, there are moving siderods.