Feature●11420 4 Inch Plastic End Cap Model: 11420 part number 766565114209 PRODUCT DESCRIPTION s 4 Inch Plastic End Cap use for capping off unused dust fitting ends, such as one side of a Y on a dust collector. Allows you to redirect air flow where needed. Features: Use to shut air flow off where not needed Color may vary Its made of polypropylene●If you have any questions please contact us through messaging. We will be more than happy to answer all your inquiriesDescription 11420 4-Inch Plastic End Cap