All of the diameters of the attachments is around 1.25 inch(32mm). Compatible with for Dyson V7 V8 V10 DC30 DC45 vacuum cleaner after connecting with the adapter converters.Hardwood floor brush head swivels 360 degrees, getting around and under furniture easily. The front bristles have spaces between them to let larger particles through. Also works well on rugs.Soft horsehair dusting brush, effectively cleaning corner dust, such as keyboards, bookshelf, air conditioner, cars, office desk, sofas, beds, curtains, windows, and so little nook and cranny of the countertops.The adapter tools, easily connect your universal or old generation Dyson attachments to your new Dyson vacuums, help efficiently reuse some of the tools from your old vacuum cleaner.Colour: blackMaterial: plasticPackage Contents:1 * Brush2 * Round brushes (hair length: 25mm)2 * Converters1 * Cleaning brushOnly the above package content, other products are not included.Note: Light shooting 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.