2D Grade Control - Cat Next Gen Excavators

Standard Cat Grade with 2D automatically guides depth, slope and horizontal distance to grade for quickly and accurately reaching desired grade. With increased productivity and less reliance on ground labor helping to lower operating costs.
2D Grade Control provides the operator with real-time guidance of bucket position throughout the full range of motion for the boom, stick, and bucket, grade with 2D is great for applications such as utility projects, general construction, residential construction and commercial site work.

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what year machines are 'Next Gen'?