1.The inner diameter is 35mm, fits all vacuum cleaners accepting 35mm inner diameter attachment 2.he switch on top of the attachment is used to get deep into carpet or lift up and go on hard floor.Red anti-static materials on the edges of the nozzle help remove dust and pet hair more efficiently 3.Easy to attach and detach Use for wet or dry pickup Type:Vacuum Cleaner Parts Vacuum Part Type:Brushes Model Number:35mm Vacuum Cleaner Inner diameter:35mm Materials:Plastic Color:Black Working length:26.6cm Working width: 8.8cm Package Contents: 1pcs Floor Brush Only the above package content, other products are not included. Note: Light 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.