The Good: "life saver" its in the name that's what they do save life's & bars, thighs, nuts, ribs, ect
The Bad: that they don't come in white or some custom colors hope its in the works for may.
I have tried to kill them street, park, dirt jumps, rolling faded at night they keep on kicking. I have changed my grips 3 times and have never had to deal with a stripped hex. Even when there's dirt inside just one blow from the compressor all clean. Have never had them loosen up. I just love them.