What's the difference between 2 and 3 jointed standing desks?

What’s the difference between 2 and 3 jointed standing desks?

The main difference is the height range. 2 jointed: 69-115cm, 3 jointed: 64-129cm (excluding table top). In general, for users with height shorter than 5″3 or taller than 5″10, we suggest using the 3-jointed model. Any other users who are in between, we believe the 2 jointed model maybe sufficient.