It drops well, it puts the tank in a good comfortable possition.
On/Off doesn't work well.
The only way the on/off works is by completly using all of your air, or co2.(all of it).
If you decide to take off the tank before it is empty, and you begin to unscrew it, the on/off pin would actually stay on the tank which means you have to unsrcew the tank itself instead of the on/off knob. Otherwise, getting over the fact that the on/off doesnt work its good. ha....ha ha..ha.
I wouldn't suggest getting it, because its pretty cheap.