You need to replace a pair of nose pads. If you are lucky, the pads will just drop out when you try to remove them. If you are not, you will have to wrestle them out of the box changing the position of the nose pad box and arm. With this plier a quick change stays quick without having to do a readjustment. Slip the pronged jaw between the pad and the box and let the hooked jaw pop out the pad.