brand new and high quality Features: High quality material with stable performance, practical and useful. Features an external flare for reduced port turbulence and enhanced aesthetic appeal. Overlaps with the sound radiated from the front of the horn to produce a effect. Light-weight and durable, easy to install. Ports are a press-fit style and can be trimmed to length if needed. Perfect for tuning small 2-3" high-performance bookshelf or micro speakers. Speaker Tubes only, other accessories demo in the picture are not included! Specification: Material: Plastic Type: Accessories Color: Black Opening Hole Diameter: 18mm/ 0.71in Length: 37mm/ 1.47in Front Outside Diameter: 22.0mm/ 0.87in Front Inside Diameter: 15.5mm/ 0.61in Tail Outside Diameter: 15.0mm/ 0.59in Tail Inside Diameter: 13.0mm/ 0.51in Quantity: 1 Set Note: 1.No retail package. 2.Please allow 0-1cm error due to manual measurement. plz make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 2 Pcs x Speaker Tubes