POWERTILT MECHANICAL WEDGE COUPLER The AMI Axxis PowerTilt Mechanical Wedge Coupler provides greater versatility with 180 degrees of rotation on 25-70 series excavators, and 120-degrees on 130-400 series excavators. This coupler is an ideal performer for sloped trenching, excavating around foundations and sidewalks, as well as ditch cleaning. Offering the same features as a standard AMI coupler, the Axxis PowerTilt Mechanical Wedge Coupler requires one set of bi-directional auxiliary hydraulics to operate the tilt function.