Is this a real Duplo Train Base or fake? I'm new to LEGO, so forgive me if this is a simple question. I purchased a lot of 30 Duplo Train Base from eBay.

Below is the picture that accompanied the listing. There is a disclaimer stating: (Stock Pictures colors of trains may be different)



What I received aside from the 20 that fit the Duplo Train Base plus 10 of these train bases: 



The LEGO DUPLO Creative Suitcase 10565 shows the train base with a pincher tip and not a closed loop:



Not sure, what the other 10 train bases I received are. The 10 cars do seem to say DUPLO inside the circle if I look closely.
These 10 are Duplo Vehicle Car Base 2 x 6 with Hitches and Red Wheels (Old)' (4883cx2) and came in Red, Blue and Yellow