United Pacific 110701 Headlight Switch Knob for 1968-72 Chevy & GMC Truck. High quality plastic injection molded with durable polypropylene plastic Deluxe style with stainless steel center insert Original style triangular shape steel rod with notched tip Perfect for replacing that wore out and faded knob To install, simply push the release button at the top of the switch housing and pull the old knob out, then slide the new one in