Well done K&F! This is a single suction cup car mount that really holds tightly.In the kit you get the suction cup, the ball joint arm, an action camera mount, a phone mount, a couple replacement rubber o-rings and a tools to tighten everything down. Usage is pretty simple, as you might expect. Mount the ball joint arm onto the top then pick your mount from either the action camera or the phone holder, and attach that to the other end of the ball joint. Clean the surface prior to attachment and then press the suction cup onto the surface. On the side of the cup is a pump. Just press that until you see it won't suck anymore and you're ready to go! If you ever see the white line on the pump, you're not well attached and you should give it another go with mounting.You can also attach more kit at more positions as there are a number of threaded connector holes which will produce a soft whistle at higher speed due to air flow through the device. Yes, it can be heard on your audio but honestly, stop listening to your audio at speed, there's nothing usable there.I tested this out with a 360 camera using the action camera mount and had flawless results with speed up to about 60 mph. Yes it works for an action camera and a 360 camera. Next is to mount a full frame camera with a cage to it and see how it fares. Completely endorse this for action cameras and 360 cameras, full frame testing coming soon!Overall, great quality from K&F Concept as usual. No reservations here. Great product.