SNAP - Tool Selector Please enter the specifics for your application in the following fields and click Calculate to select the correct tool for your application. If you need to make changes, you may change the data and click Calculate or click Start Over. If you are working with a tapped hole, please call Heule Tool at (513)860-9900 to speak with an engineer for extended range options. Drilled Hole Diameter (inch): *If < 1" Use Format: 0.XXX Select Chamfer Size: Small 5.5 mm / 0.217" Medium 6 mm / 0.236" Large 6.5 mm / 0.256" Xtra Large 7 mm / 0.276" *Please do not use the browser's back or refresh buttons. Use the Start Over button instead.