The Barranco D53 is an all-in-one heavy machinery tool. It is a combination of hammer, locking pliers, bolt cutter, and monkey wrench. It has numerous other small tools and functions, including a red diode laser level. The entire unit is rather large, around 2.5 to 3 feet in length. Pey'j acquired one while he and Jade were exploring Black Isle, and uses it as both weapon and tool.
As seen in the teaser trailer of Beyond Good and Evil 2, Pey'j still owns the Barranco, having used it to try and fix the hovercar he and Jade were driving through the desert.