JOKARI 70000 4-70 Cable Knife System for Round Cable Stripping, Yellow Strips all common round cables with diameter from 8 to 28 mm , electrical engineering, electrical industry (The 8-28mm Hook comes included standard) Quick change hook system allows you to swap out brackets to strip any cable from 4-70mm (Other Hooks Sold Separately) Safety hook blade is only exposed when pushed against the wire insulation. Perfect protection for everyday routine work Extra Large, Dual Compound Handle gives an easier grip and more leverage for stripping larger cables The Standard Hook features a circle opening, allowing you to see the precision of your round cut