Hello Karen, and thank you for your inquiry regarding this item from Prime-Line Products. These types of support pegs do not use a support strip, but rather fit into a matching hole size drilled directly into the cabinet walls. If you're looking for support pegs that use metal track for vertical supports, you might consider using model number U-9294 with model numbers FG4B9200ZINC, or FG4B9200WHT which are the type of Knape & Vogt tracks these clips fit into. Home Depot may offer other brands, but these model numbers were the first ones found in this site.
For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at email@example.com