CS Unitec introduces a pneumatic concrete chain saw with a new AirFORCE F4 diamond chain designed to cut reinforced concrete, brick, block, concrete pipe and natural stone. The CS 536163-2 air saw plunge cuts up to 15 inches deep in one pass and quickly cuts mechanical openings, irregular shapes and square corners up to 14 inches with no overcuts. Its 6.5-hp air motor has a no-load speed of 5700 rpm. The saw can be used hand-held or with the optional SpeedHook guide to make straight cuts through walls and other surfaces. It operates at 124 cfm air volume at 124 cfm air volume at 90 psi.