The DCE151B 20-Volt MAX XR Cable Stripper enables THHN and XHHW cable to be quickly stripped up to 4; without the need of a knife. Using the appropriate bushing the cable stripper works on both copper and aluminum cable, covering a range in size from 6 AWG to 750MCM CU and 900MCM AL. To help determine which bushing is right for the job DEWALT has a reference chart that is included in the manual as well as online. When selecting a bushing it is recommend that bushing size above and below the recommended bushing also be selected as there can be variance in a specific brand of cable.