The Shark Duoclean Detect AZ3901 Powerhead is a powerhead specifically designed for the Shark Power Detect vacuum cleaner model. It is compatible with the PowerDetect and AZ3901 models. This powerhead is suitable for use with the Powered Lift Away feature of the vacuum cleaner, providing efficient cleaning performance. The set includes one powerhead in a multicolor design, perfect for enhancing the cleaning capabilities of your Shark vacuum.