Notes during the machine operation:Some lens has a protective point, this point is a measure for anti-static burn and keep safety , as clothes and hair are all static materials, you can open this protective point with an high-grade anti-static ironif you use a common iron, it requires much special attention, first, if the iron has melted the tin-can temperature, do to unplug the iron supply, then go to open the lens protection point, this is to prevent lens from burning by static electricity iron.Optical Pick-Up Lens -210A for DVD CDcolour:blackMaterial:plasticsize: 4.5*3.5cmPackage Contents:1 * -210A Optical Pick-Up LensOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.