Although the charts show "high head", I wasn't very comfortable turning the lock on/off. The switch only bites when the top of the head protrudes past the base of the switch, which basically means you have to press the button cavity itself to activate it. I have found that I have to press it several times before it clicks into place. If such little things don't bother you, then everything should be fine. I wanted to spend a little more to get something substantial, but I feel like it's not enough. Perhaps my expectations were too high or inadequate? I will try other plastic switches which hopefully have better/higher "action".