The screws / heavy duty anchor but only for stable masonry and concrete are well suited. Likely in most garages be available. For wood and plaster you have to look for other ways of attaching.
The screws are rather cheap quality, probably only to be expected at the price. It must be given the screws slightly Eight not to turn, "to firmly coming from"! My place 7 Screw the point was very good to feel where the screw was tightened. The 8th has thus turned smoothly without any noticeable change in the reconditions / torque at low torque. Maybe that was a rotten egg with material defects? Laestigerweise you can not get such a crazy bolt of course out of the wall.
I then had to get a new at the hardware store for 40cent which is also somewhat more stable than the supplied one. If necessary, one could see it already if you can not deliver something better material also for this price.
Would definitely buy again this in view of the production quality of the steel hook very discounted set. In my view, would be the price also justified when no screws / fittings were doing.