60mm x 113mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 4pcs Binding Barrels and Screws Maximum 12000 RPM

Maximum 12000 RPM

Clamping Range: 9-16mm

Male Thread Size : M10 x 27mm / M10 x 1

water tank

Plastic round base design will do no harm and scratches to your floors

60mm x 113mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 4pcs Binding Barrels and Screws Maximum 12000 RPMFeatures: 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