This is a series of gashapon (capsule toys) or trading figures depicting race cars, F1 and the like.
From the Hasegawa website:
You're in the lead. The finish line is near. Fuel is low. Tires are worn. Do you push your car to the limit, or pay a visit to the pit crew? Time's wasting. The fans are on their feet, waiting for your decision. Do you risk it all for that one shot at glory? The choice is up to you. This limited edition figure set features parts for two driver figures and eight mechanic figures in two distinctive styles.
Parts come molded in light brown. Vinyl parts are also included.