Skip Sequence. Oregon 75EXJ has a reshaped cutter and proprietary grind technology for superior performance, sharpness and consistency. (Replaces 75JGX) With every cut, your reputation is on the line. That's why Oregon has spent generations engineering the sharpest, fastest, professional cutting systems in the world. Day in and day out, the PowerCut 70-Series EX full chisel cutters help you power through timber with speed, efficiency and precision. Designed to maximize every cut, our proprietary cutter technology gives users a sharper, more durable cutting edge that provides increased cutting performance with less effort.