Specification Brand : deep-deal BulletPoint : 37-52 mm 37 to 52 Step Up Ring Filter Adapter BulletPoint1 : EXCELLENT SUPPRESSION ABILITY: The inside of the receiver filter is ultra thin PCB board, with excellent suppression ability for out of band remote . With anti interference and has no out of band spurious response, the shell of this bandpass filter is made of aluminum alloy. BulletPoint2 : SUITABLE FOR: This bandpass filter is for performance optimization of 403MHz receiving equipment. The bandpass filter also has low in band insertion loss and steep cut off characteristics. BulletPoint3 : FOR FILTER OUT OF BAND : This bandpass filter can effectively filter out of band , reduce noise, and increase dynamic range, very practical for your use. BulletPoint4 : HIGH QUALITY MATERIAL: This bandpass filter is made of aluminum alloy housing which is small size and lightweight, highly sturdy, easy to use and convenient to carry. BulletPoint5 : INFORMATION OF PRODUCT: The impedance of this bandpass filter is 50Ohms. The center frequency is 403MHz. The 1dB passband is 401-405MHz. Color : default ExternallyAssignedProductIdentifier1 : 0624553669837 ExternallyAssignedProductIdentifier2 : 624553669837 ItemName : 37-52 mm 37 to 52 Step up Ring Filter Adapter ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 6 centimeters ItemPackageDimensions_Width : 4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-filter-step-up-rings Manufacturer : deepdeal Material : Optical Glass ModelName : Marhynchus98ra163u4f ModelNumber : Marhynchus98ra163u4f NumberOfItems : 1 PartNumber : deepdeal-37-52 PhotoFilterEffectType : Neutral Density ProductDescription : 37-52 mm 37 to 52 Step Up Ring Filter Adapter 37mm-52mm Introduction Male thread: 37mm Female thread: 52mm Brand new, never used Made of metal color : black Package Included: Filter Ring Adapter x1 (Original Manufactory Package) Suitable For Access a wider variaty of filters, adapters, hoods and more... ProductSiteLaunchDate : 2012-09-10T12:33:55.538Z Size : Blue UnitCount : 1 WaterResistanceLevel : not_water_resistant