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. the button head of the right index finger to operate, and 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 ly match the vacuum cleaner, making you think it is a part of the vacuum cleaner, beautiful and generous. 5. Specially designed for V7 V8 V10 V11 vacuum cleaner, which helps to clean more conveniently and efficiently. Specification: Not for Digtal Silm Colour: Gray Material: ABS Size: 3.2x2.5x1.5cm Package Contents: 20 x Vacuum Cleaner Trigger Lock Only the above package content, other products are not included. Note: Light reflection 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.