Haquas 1 & 2 go come from the Tsuburaya show "Kyouryu Sentai Koseidon". The show first aired in July 1978 on TV Tokyo. "Kyouryu Sentai Koseidon" was part of the series of dinosaur themed shows that includes Born Free and Aizenborg.

The toy is one of several "Mantle Gokin" toys produced by Tomy. Haquas 1 & 2 split into separate vehicles, or they can combine into one vehicle by a magnemo connection. Haquas comes with two dinosaurs, a dimetrodon and a brontosaurus .Originally Haquas 1 had rubber treads, but they have disintegrated on this example.

The claw on Haquas 1 extends and can grab dinosaurs with it's spring action claw. Haquas 1 also features 2 missile firing cannons, an extending hook, and 2 small black cannons that move up and down.

Haquas 2 has a neat little gimmick. When you rotate the cannon on top, the yellow bumper extends. Also, you can flip the wheels out to make a flight mode.

The clear dinosaur cage opens to put captured dinos in. You can connect it to Haquas 1 & 2 to make the full Haquas 1 & 2 go gattai set.

The box itself is a work of art, featuring full color paintings and cut away drawings.