These are not very solid. One showed up broke, and while Wayfair did replace it, it took over a month. Because they are adjustable, when you tighten them to your desired spot, they are not overly tight and strong. Just be careful when handling them. Pick a position and keep it there. Oh and there is no switch on them so you have to hard wire them to an existing light switch. Which we don’t have so our bad... we are currently unscrewing the bulb while trying to find a solution