This set of rails has been designed to fit into the gaps on home/spray walls. Their shape lets you fit them around the gaps where you have no t-nuts.
The rails themselves range from 3/4" to 1-1/8" deep. The lip is amply rounded, which means when you peel off of them, they won't hurt your skin. The rounded lip is comfortable enough to use these on wall transitions where cutting loose on them will be friendly to your fingers.
The grip they offer ranges from rounded crimps to a four-finger wide incut that is 1-1/8" deep.
You can expect them to feel V1 on vertical, V3 on a 25-degree overhanging wall, and at the very least, V4/5 on a 45-degree wall.