These 28 clear star shape plastic reflector collars slip over miniature Christmas bulbs to reflect and enhance the light. They are Lite-Kaps brand reflectors by Decor Noel, originally sold in packages of six to eight in the late 1960s and 1970s. The double layer 5-point star design creates a nice enlarged glow to your colored light strings. All are in excellent vintage condition. About 1-1/2 inches diameter.