1.16.8cm diameter grid, for 7 inch standard reflector lamp shade.2.60 , it can great narrow the light-throw from your lamp shade and an shadow effect.3.Made of high-quality aluminum material, exquisite and durable.4.Perfect for photography of product, advertising, figure, portrait, art, wedding etc..5.It could be easily removed and attached from your lamp shade.Material:aluminumAngle:60Diameter:16.8cm / 6.6 inchFit:7 inch Standard Lamp ShadePackage Size:17 * 17 * 1.3cm / 6.7 * 6.7 * 0.5 inchColor:BlackPackage Contents:1* cellular networkOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.