2" Horizontal Blind Hold Down with Pins, METAL for DURABILITY! (2 Pair) MATERIAL: Zinc plated metal. EASY TO INSTALL: Pin is supposed to be smaller than hole. (2 complete pairs / 4 brackets & 4 pins Hold Down Bracket for some 2 Inch Blinds.) If you need to drill a hole in the bottom rail of your blinds to accommodate the pin, use a 7/64" or 3/32" drill bit.