Lisle 60450 Radiator Petcock Wrench Set Used to open and close petcocks on radiators and other applications Includes long and short wrenches to fit many applications Can be used with a 1/4 inch drive ratchet or 3/4 inch open or boxed end wrenches Knurled end provides extra grip when used with fingers Made of 3/4 inch hex steel with black oxide finish