Hot Wheels Car Maker Protoshotz Wax Sticks Refill Pack no.4 Expand your collection of tailor-made Hot Wheels vehicles Protoshotz wax sticks are designed to work with the Hot Wheels Car Maker (sold separately) Turn a stick of wax into a fully functioning Hot Wheels vehicle in a matter of minutes! Wax sticks are inserted into the machine along with a mold and, once cooled, produce a custom-made Hot Wheels vehicle Includes five sticks in different colors to create even more unique cars!