and high quality Features: Features an external flare for reduced port turbulence and enhanced aesthetic appeal. Reduces air turbulence to minimize or eliminate port noise. Effectively improves the sound quality of the speaker. Easy to install. Just cut to length, glue together, and install. Perfect for tuning small high-performance bookshelf or micro speakers. Speaker tubes only; other accessories shown in the picture are not included. Specification: Material: Plastic Type: Accessories Color: Black Opening Hole Diameter: 45mm / 1.77in Length: 115mm / 4.53in Front Outside Diameter: 59mm / 2.32in Tail Inside Diameter: 36mm / 1.41in Quantity: 1 Set Note: No retail package. Please allow 0–1cm error due to manual measurement. Please ensure you are comfortable with this before purchasing. Due to differences between monitor displays, the image may not accurately reflect the actual color of the item. Package includes: 2 pcs x Speaker Tubes