Description: The multi-stage transfer interface makes it suitable for a variety of vacuum cleaners. Exquisite and professional workmanship makes it very wear-resistant and sturdy. Its reusable feature allows it to be used for a long time. Two different specifications allow you to choose the most suitable one according to your needs. Made of ABS engineering plastics material, it is very durable to use. There are two specifications for you to choose: big opening and small opening. It can be used to connect various vacuum cleaners. It is suitable for all kinds of wall adsorption, dust-proof and dust-removing dust-receiving tools, to ensure that the operator is dust-free and drilling holes. Item Name: Dust Collector Material: ABS Engineering Plastics Features: Hands-Free, Easy to Use, Easy to Clean The Interface Diameter of The Large Opening Type to Connect The Dust Collector Adapter: 39/35/32/26mm The Interface Diameter of The Small Opening Type to Connect The Dust Collector Adapter: 44/39/34/29mm Size Details: Big Opening: 20.2cm x 10.2cm x 3.9cm/7.95" x 4.02" x 1.54" (Approx.) Small Opening: 20.2cm x 7.1cm x 4.4cm/7.95" x 2.8" x 1.73" (Approx.) Conversion Port Size: Big Opening: 2.5cm-4cm/0.98"-1.57" (Approx.) Small Opening: 2.8cm-4.5cm/1.1"-1.77" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Dust Collector 1 x Adapter