Features and Benefits:Designed for use with the GearRatchet™ Pass-Thru™ ratchet system;Works on round and hex shaped dies;Bright, full polish chrome finish easily wipes clean and resists corrosion;Tighten screw to securely hold die in place;Fits up to 1 in diameter hex or round stock;GEARWRENCH has taken the ratcheting wrench design and applied it to the tap and die application. The ratcheting handles and adapters allow for easy back and forth movement required while cutting threads on either taps or dies. The 5� ratcheting arc with reversing lever eliminates hand over hand turning. The hex die adapters work on either round or hex shaped dies.