Used for removing rusted on nuts from studs etc A spanner is used to turn the hexagon end which has the effect of forcing the chisel end into a flat of the nut forcing apart without damage to the thread of the stud A spanner is used to turn the hexagon end which has the effect of forcing the chisel end into a flat of the nut forceing apart without damage to the thread of the stud Available in four sizes to cover sizes from 5 to 27mm Size 1624mm