1. The button lock is installed on the power button of the vacuum cleaner, which can easily and conveniently use the vacuum cleaner. no need to keep pressing the button while vacuuming, and the fingers no longer hurt. 2. Press the button head of the right index finger to operate, and press the button lever at another position of the right thumb to close it. operation is simple and very convenient. 3. The installation is simple and convenient, it only takes a few seconds to complete the installation. 4. The design and color of the power button lock perfectly match the vacuum cleaner, making you think it is a part of the vacuum cleaner, beautiful and generous. 5. Specially designed for V6 V7 V8 V10 V11vacuum cleaner, does not fit for digital slim model, which helps to clean more conveniently and efficiently. Specification: Not for Digtal Silm Colour:Gray/Red Material:ABS Size:3.2x2.5x1.5cm Package Contents: AS Show Note: 1. Please allow 1-2cm error due to manual measurement 2. The screen display is different, and there may be chromatic aberration, all subject to the actual object