"The Super Flyweight keeps costs down and is easy and fast to transport."
ETR Super Flyweight Drill

The ETR Super Flyweight Drill is an ultra-lightweight drill that makes exploratory drilling an option because of its low cost and ease of transport. The Super Flyweight weighs less than 1100lb (500kg), is powered by a 40 horsepower Kohler gas engine.

ETR Super Flyweight Depths and Core:
300ft (100m) BTW - 1.625" (42mm) core

Link to ETR Drlls website.