This 5 pack of Scaled Tech Feet comes from the 21 Pack. They are the largest holds from that set. The scaled-texture is intentionally sharp so that they offer a defined edge to stand on. There are multiple rows of scales so you can dial in precise footwork or smear on top of them.
The scale design makes them high friction, allowing them to serve climbers ranging from intermediate to advanced. For a smaller version of this set, check out the 10 Small and the 10 Super Small.