This tablet holder is easy to assemble. Placement into a car cup holder is also easy; however, you will need to test placement to determine the best position for the primary user. This is because the adjustable arm does not rotate/spin after the unit is secured into the cup holder. For example, if the unit is to holder a tablet that is initially utilized by the front seat passenger, there is not way to rotate/spin the arm so the drive can use the tablet. You will need to first loosen the mount in the cup holder, then rotate the entire unit towards the drivers position.
To tighten the mount in the cup holder, you must spin the arm after the unit is placed in the cup holder. Multiple tries may be needed of the final tightened position does not align with the desired facing direction.
This minor detail aside, the table holder is strong and sturdy.