Sonic Pro-Wrenches are made bigger and easier to grip for faster pit work. We designed our wrenches with larger diameter (5/8) hex stock and we also designed in a longer handle so your hand fits onto it completely for more precise control. After machining, we finish your Sonic Pro-Wrench with high quality anodizing and laser marking. We then assemble your Sonic Pro-Wrench with the finest drill blank tips available. Our Double Ended Pro-Wrench has both a .050 and a .078 tip installed.