Speaker mounter for pc monitor.
I use this for LOGICOOL Z120BW speaker( https://www.amazon.co.jp/%E3%83%AD%E3%82%B8%E3%82%AF%E3%83%BC%E3%83%AB-Z120BW-LOGICOOL-%E3%82%B9%E3%83%86%E3%83%AC%E3%82%AA%E3%82%B9%E3%83%94%E3%83%BC%E3%82%AB%E3%83%BC/dp/B0053N3NVW/ref=as_li_ss_tl?ie=UTF8&qid=1514637385&sr=8-3&keywords=speaker&linkCode=sl1&tag=drunkar-22&linkId=fa447647df21b5d5271d52d7bcaed64a ) and ASUS VE248HR display( https://www.amazon.co.jp/%E3%83%AD%E3%82%B8%E3%82%AF%E3%83%BC%E3%83%AB-Z120BW-LOGICOOL-%E3%82%B9%E3%83%86%E3%83%AC%E3%82%AA%E3%82%B9%E3%83%94%E3%83%BC%E3%82%AB%E3%83%BC/dp/B0053N3NVW/ref=as_li_ss_tl?ie=UTF8&qid=1514637385&sr=8-3&keywords=speaker&linkCode=sl1&tag=drunkar-22&linkId=fa447647df21b5d5271d52d7bcaed64a ) .