Features: Small size, convenient to use. Durable, has long service for time. Can obtain the transition bandwidth and smaller more narrow stopband fluctuations. This filter can greatly weaken the signal of 470M or above, harmonic suppression capacity is about 50dbc. This is a 7 order ellipse function low-pass filter, filter steepness of the other properties are better than the filter. Specifications: Material: Metal Size: Approx. 36x16 mm/1.42x0.63 in The parameter index: 1, S11-0.5db < 0.5db, insertion loss; Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Low Pass Filter