This is a tool to adjust the tension on your scissors if they have a regular flat type screw. The pliers made by Wolf are the sharpeners choice for tightening or loosening slotted screws on all types of shears. It comes with two bits 9/64" amd 7/32" but uses standard screw driver bits. This is a popular tool for sharpeners, barbers and stylists. It allows you to turn screws without slipping or damaging the slotted head. The scissor video called "Shear Knowledge" shows how to correctly set the adjustment on shears.