Cleco 19 Series Angle Nutrunners, Reversible – Clecomatic Clutch feature class-leading accuracy and repeatability. Cleco 19 Series Angle Nutrunners, Reversible – Clecomatic Clutch also feature an external torque adjustment and a sliding knob reverse. Cleco 19 Series Angle Nutrunners, Reversible – Clecomatic Clutch are designed with either 1/4” or 3/8” square drive.