Applicable models: This replacement trigger button assembly is 100% compatible with For V15/SV22/SV28 series vacuum cleaners. Upgraded version: This power switch assembly is compatible with V11 triggers, and the red trigger is made of stronger metal materials and brackets, which is more than the original and not be damaged after long-term use. Reasons for choosing metal triggers: V15 plastic triggers are easy to break after long-term use, and metal triggers are sturdy and and can withstand greater pressure. After installing the metal trigger, you don't have to worry about replacing the vacuum trigger again. [Power Switch Fault Repair] 1. The trigger no longer responds when the trigger is pressed to engage the machine. 2. The trigger starts on its own or gets stuck when it starts. Installation Support: We provide a complete vacuum cleaner host disassembly video, allowing you to easily remove the old switch button assembly and successfully install the new one, so that your vacuum