Special sheathing and insulation-stripping tool for PVC-insulated data communications and controller connections. Features Titanium-Nitride blade coating for faster cutting, less wear, and longer life. No cutting depth adjustment required. The 30161 (PC-CAT) Special sheating and insulation stripping tool for PVC-insulated CAT and twisted pair cables. (CAT-5, CAT-6, CAT-6A, CAT-7 etc).