Lever Switch Knob 10 New Style These are the knobs for the new style lever switch that have the short shaft on them so the knob is longer. If the switch shaft is black plastic this is the correct knob. If the switch shaft is metal you will need the older style knob. PTOSSB082B. The mask on the opening may be too narrow for these new knobs so check Lever switch mask part # PTOSSB061A