1. metal clip 3d glasses 2. matel or plastic clip 3. 1.00mm-1. ... ACRYLIC filter 4. size: 125x46mm or 125x36m metal clip 3d glasses: Product profileThicken Brown Amethyst 3d glasses, reusable, can made as customers' requests ... 90%,direct transmittance 15%.Usage area3D movie,science education medical 3D equipment,3D theater,3D TV,3Dcomputer game,3D book. metal clip 3d glasses