Door Stoppers for Bottom of Door – Rubber Door Stopper Wedge – Pack of 4 – Door Stop – Door Stoppers – Doorstop – Door Wedge – Doorstops for Inside Door – Ideal for Homes, Schools, Offices, Workshops Black Rubber Wedge auspowers_batchtwo 2 red buttons on top B07QTBTCM7 2 red buttons on top for: Mute button: Mute the device with just one key A B button: It can select the device you want to use as the audio input or output conveniently Specification: Dimensions: L87 W69 H28 mm Weight: 100g Packing List: AUX audio selector 1 Each rectangular sticker labels is 4x2 inch (76mm x 25mm or approximately 7 Door Stoppers for Bottom of Door – Rubber Door Stopper Wedge – Pack of 4 – Door Stop – Door Stoppers – Doorstop – Door Wedge – Doorstops for Inside Door – Ideal for Homes Keep the Door Stable If you don't want to start making permanent changes to your walls