Plastic Polyester Used to tilt slats back and forth (open and close.) NOT used to raise or lower blinds. Can only fit inside a 2.25 inch wide by 2 inch tall headrail. Can only fit a 1/4 inch in diameter square tilter rod (if you notice the pictures, there is a small square in the center of the mechanism. This is where you feed the metal rod through which is located inside your blinds' headrail.) Comes with white cord that's 1.8mm wide and is no less than 40" long 1 Quantity: 2" HIGH PROFILE CORD TILTER, in White. For Horizontal Blinds, with 6 sided gear to accommodate A SQUARE tilt rod. PRE-CORDED with WHITE LIFT CORD. This Cord TILTER CONTROL also called cord tilt gear is designed For use with 2" Horizontal Wood or Faux Wood Blinds, with a High PROFILE Head Rail.