There are a total of four vacuum cleaner accessory adapters of different specifications, which can be adapted to more vacuum cleaner models, so that you have no worries. 5 Layer Universal Vacuum Hose Adapter: Outer diameter of the 5 layers vacuum adapter is 27mm, 32mm, 35mm, 40mm, 50mm. Suitable for shop vac attachment with 1"?25.4mm), 1 1/4'' (32mm), 1 3/8'' (35mm), 1 1/2''(39mm), 1 7/8"(49mm) diameter. The vacuum hose adapter can be easily cut into 5 size connector to fit for shop vac accessories. Vacuum converter 2-1/2" to 1-1/4": This vacuum hose converter can convert 2-1/2" to 1-1/4", this hose converter can attach other smaller tools or attachments and make daily cleaning easier and faster. Vacuum Hose Converter 1-3/8" to 1-1/4": This hose converter reduces a 35mm/1-3/8" vacuum to a 32mm/1-1/4" attachment, allowing your vacuum to accommodate more cleaning brushes for a wider range of uses. Vacuum attachment 1-1/4" to 1-3/8" to 1-1/2" : This vacuum attachment converts 1-1/4" to 1-1/4", 1-1/4" to 1-3/8", 1-1/2" to 1-1/4", 1-1/2" to 1-3/8" and 1-1/2" to 1-3/8" for everyday cleaning needs and is suitable for most vacuum cleaners. Convenient and easy to use. Package Includes: 1. Extension tube *2 2. Horsehair round brush *1 3. Two-in-one flat suction *1 4. Sofa suction nozzle *1 5. T-shaped brush *1 6. long soft flat suction nozzle *1 7. Flat suction nozzle *1 8. Vacuum Hose Converter 1-3/8" to 1-1/4" *1 9. Vacuum converter 2-1/2" to 1-1/4" *1 10. Vacuum attachment 1-1/4" to 1-3/8" to 1-1/2" *1 11. Vacuum attachment 1", 1 1/4'', 1 3/8'', 1 1/2'', 1 7/8" *1 12. 12in Wide Vacuum Brush Attachment *1 13. 1 1/4" Utility Nozzle with Removable Plastic Brush