Adjustable straight handle tap wrenches have one threaded handle which is attached to one of the clamps. The clamp is opened to insert the tool and then tightened down against the tool to secure it. This type of tap wrench is used with larger taps and where there is room for a larger wrench. This tap wrench can also be used to turn other tools such as reamers or screw extractors. 1/4--1-1/8 adj tap and reamer wrench