Brand Feature: Made of high-quality metal and plastic material, durable, firm and stable for use. Effectively protects speaker and horn from dust, dirt, pollution, helping to extend service life. Suitable for 1/2/3/4/5/6 inch round speakers and horns. Easy to install; simply insert the mesh grill into the speaker and secure it slightly. Speaker Grill Mesh only; other accessories shown in the picture are not included. Specifications: Item Type: Speaker Grill Mesh Material: Metal Cold Rolled Steel, ABS Plastic Size: 1 inch: inside diameter: 45mm (1.7in), outside diameter: 51mm (2in), hole diameter: 50mm (1.9in), height: 7mm (0.2in), thickness: 3mm (0.1in) 2 inch: inside diameter: 84mm (3.3in), outside diameter: 90mm (3.5in), hole diameter: 88mm (3.4in), height: 10mm (0.3in), thickness: 6mm (0.2in) 3 inch: inside diameter: 100mm (3.9in), outside diameter: 106mm (4.1in), hole diameter: 104mm (4in), height: 10mm (0.3in), thickness: 6mm (0.2in) 4 inch: inside diameter: 119mm (4.6in), outside diameter: 126mm (4.9in), hole diameter: 124mm (4.8in), height: 10mm (0.3in), thickness: 6mm (0.2in) 5 inch: inside diameter: 142mm (5.5in), outside diameter: 148mm (5.8in), hole diameter: 147mm (5.7in), height: 10mm (0.3in), thickness: 6mm (0.2in) 6 inch: inside diameter: 173mm (6.8in), outside diameter: 180mm (7in), hole diameter: 178mm (7in), height: 10mm (0.3in), thickness: 6mm (0.2in) Color: Black Surface Treatment: Spray Paint Quantity: 1 Piece Note: No retail packaging. Measurement conversion: 1cm = 10mm = 0.39inch Allow 0-1cm variation due to manual measurement. Please ensure you are comfortable with this before ordering. Due to differences in monitor displays, the actual item color may vary slightly from the image. Package Includes: 1 x Speaker Grill Mesh