Caterpillar D8

The Caterpillar D8 is a medium track-type tractor designed and manufactured by Caterpillar. Though it comes in many configurations, it is usually sold as a bulldozer equipped with a detachable large blade and a rear ripper attachment.
Blades.
Several types of bulldozer blade can be used on the front of the tractor:
Other blade types include landfill U-Blades, woodchip U-blades, and two-way blades for work inside the holds of ships.