More durable: the spare button with reinforcement arrangement. Vulnerable parts upgraded and reinforced. Thicker for vulnerable parts. Make the power switch button with long service life. 2 pieces: with 2 spare switches in the package. Allows you to have a spare surplus for the spare switch so you can replace it at any time. The damaged part can be replaced in time. Plastic boxes: Come with plastic boxes to protect the buttons during shipping. The plastic boxes are dust and water resistant. Easy to store. Also protects switch buttons during storage. Compatibility: Can be used as a spare switch for any Dyson V10 or V11 vacuum cleaner. Like for example V10 animal, V10 absolute, V10 Motorhead, V11 animal, V11 animal+, etc. (it is only compatible with V11 screw-in battery vacuum cleaners, not suitable for V11 click-in battery vacuum cleaners) Good service: 30 days money back. If you have any questions, do not hesitate to contact us. We will solve your problems within 24 hours. We hope you