Connect 2-1/2inch ID Flexible Dust Collection hose to 2-1/4inch ID ports or adapters. Please note: The nominal 2-1/4inch OD is tapered on the low end of the tolerance and works best with undersized ports. Please closely check the listed dimensions to verify that they work for your application. Tough, plastic material<br><br>Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! 2-1/2-Inch nominal tapered OD end measures from 2-29/64inch (2.448inch) to 2-29/64inch (2.480inch) with 2-7/32-Inch I. D. 2-1/4-Inch nominal tapered OD end measures from 2-13/64inch( 2.210) to 2-7/32inch (2.225) with a 2-Inch I. D. Reduces from a 2-1/2-Inch to a 2-1/4-Inch hose greatly increasing the air velocity of the machine Outlet diameter: 2-1/2-Inch and 2-1/4-Inch Colour:As Shown Material:plastic<br><br>Package Contents: 1 x Vacuum hose fittings<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.