72mm x 127mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 1pcs Mounting Tape Cotter clip pin color is

Cotter clip pin color is in silver tone

It is recommended to install in Pairs

Size: 50mm Slip

Overall Size: 54 x 57 x 67mm/ 2

7/16 x 1/16 inches(15 Pcs)

72mm x 127mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 1pcs Mounting Tape Cotter clip pin color isFeatures: Speaker Port Tube is used to improve the bass response of many types of speakers. There are plenty of types to help you with your vented box design, and carries tubes of every shape and size, including adjustable length ports and flared ports. These port tubes are a reliable, convenient installation, while at the same time providing a finished, "pro" look to your bass reflex speaker building project. Normal tubes suffer from nasty turbulence