Fits snugly in a 3 diameter hole and holds firm and sturdy once mounted.

Fits snugly in a 3 diameter hole and holds firm and sturdy once mounted.  Read Less

Drill hole size 3 1/8 not 3; 3 is too small.I installed 30 of these.

Drill hole size 3 1/8 not 3; 3 is too small.I installed 30 of these.  Read Less

I've been using this product several months already...All these desk grommets will seem flimsy as they don't have much in way o...  Read More

I've been using this product several months already...All these desk grommets will seem flimsy as they don't have much in way of parts, and given this mostly sits in the desk it doesn't have to be made of steal. With that being said I've tried other units and this one is pretty solid. Charging multiple devices seems to have no issue, unlike other units I've never had any hum during charging (something you may run into). The only possible complaint is that the power cord could be a little more heavy duty, it's a ribbon type cord vs the more sturdy circular ones. It's certainly not required due to the electrical draw but it would be nice. I would definitely recommend this product.  Read Less