This is Set #1, which is the easiest to grip when related to Set #2 and Set #3.
Coming in at easy V1 on a vertical wall, this set of crimpers is an excellent choice for beginners. They have an ample 1/2" deep incut at around a 25-degree incut. These are considered small holds on a vertical wall, so when we say beginner, we mean someone wearing commercial climbing shoes and climbing multiple times a week trying to break into V2/V3 climbing.
On a 20-degree wall, they feel in the V1+ range.
As the wall gets steeper, such as a 45-degree wall, expect a V7/8 feeling crimp. The incut is 20-degrees sloping on this angle of wall which results in an advanced level crimp about 3/8" deep. The lip of the hold still exists in this steep terrain which gives you that extra little bit of staying on help.
The crimps themselves offer the Golfus dimples along the inside, so nooks and crannies present themselves to all sizes of fingers. In addition, this hold style forces you to find your favored spot for each finger pad. From delicate small fingers to large man-hands, this design style works for all hand sizes.
They offer several different ways to grip them. For example, you can open-hand them, which is by far the most challenging way to grab, you can thumb-scum, and you can thumb-crimp.
This set feels very much like a Flake Crimp would on sandstone. On a Flake Crimp outside, the holds often pinch your tips. This set has material where the pinch would occur, making them very comfortable to crimp.
Below are the hyperlinks to all three sets.