Packing List:A: Short Distance 1.75B: Short Distance 3.0C: Remote 1.75/3.0D: Remote 1.75/3.0 Black ColorSpecification:Model: long range 1.75mm/3mm universal, long range 1.75mm, short range 3mm Filament: For 1.75mm or 3mmMaterial: All matelType: Radiating tubeUse for: 3..