This honeycomb is 16.8cm in diameter and is compatible for photo studio 7" standard reflector lamp shade. Features: 16.8cm diameter honeycomb grid, compatible for 7" standard reflector lamp shade. 30 honeycomb, it can great narrow down the light-throw from your lamp shade and provide an excellent shadow effect. Made of high-quality aluminum material, exquisite and durable. Perfect for photography of product, advertising, figure, portrait, art, wedding etc.. It could be easily removed and attached from your lamp shade. Specifications: Angle: 30 Diameter: 16.8cm / 6.6in Fit: 7" Standard Lamp Shade Item Weight: 58g / 2oz Package Size: 17 * 17 * 1.3cm / 6.7 * 6.7 * 0.5in Package Weight: 60g / 2.1oz Note: The light and lamp shade is not included. Package List: 1 * Honeycomb