Specifications:
Item: speakers cover
Material: metal cold roller steel + ABS
Color: silver plated ring + black iron mesh
Installation diameter: Approx 49mm
Inner diameter: Approx 43mm
Speaker opening diameter: Approx 48mm
Plastic frame outer diameter: Approx 50mm
Net cover height: Approx 5mm (size error 1mm)
Weight: Approx 14g/0.5oz
Dimensions: Approx 5 * 5 * 1.5cm/2 * 2 * 0.6inch (L * W * H)

Package list:
2 * Speaker Covers

Note:
Please allow slight error due to manual measurement, thanks a lot!