2. The package includes five vacuum adapters in different sizes: 2-1/2 inch to 1-1/4 inch, 1-1/4 inch to 1-3/8 inch to 1-1/2 inch, 1-3/8 inch to 1-1/4 inch, 32 mm to 35 mm and 31.5 mm to 45 mm diameter. This means you are guaranteed to find the right adapter for your vacuum cleaner. 1. Continue to use your old vacuum cleaner accessories with this universal hose adapter kit. Whether large or small, the adapter easily connects old and new devices. Our product thus solves existing compatibility problems and significantly increases the versatility of your vacuum cleaner equipment. 4. With our versatile adapter kit you can easily connect different devices to your vacuum cleaner. Whether circular saw, table saw or eccentric sander - our adapters enable optimal dust extraction and thus a clean working environment. 3. When choosing your hose adapter, the diameter plays a crucial role. Before purchasing, check the inner and outer diameter of your vacuum cleaner hose and make sure the adapter fits your vacuum cleaner hose. This help you avoid passport problems and unpleasant surprises. 5. The vacuum cleaner adapters are made of high quality ABS plastic. This material is light yet stable. This means that the adapters are not only , but also easy to use. An investment that you well for a long time.