These were really cheap and exactly what I wanted in terms of size, looks and use. But after a two-week downtime of the corded lamp, they all broke. All of the black plastic wire holders broke in half. They cannot withstand any kind of tension or pressure of any kind (i.e. the pressure they need to hold something). I'm assuming it's a bad mix of plastics. If not, and the mix they used wasn't a mistake, don't buy it. You are not working