Western Optical's Multiple Pin Hole Disk Occluder is made of firm black plastic. The small size of this pinhole occluder makes it easy to hold, and easy to use. Fits completely and easily in your shirt pocket. The OS-3650 Multiple Pinhole Occluder measures 3" long x 1-1/2" in diameter.
Buy a package of six Multiple Pinhole Occluders and save $7.20!