This works great on my Weebil-S. I think it's more functional than other pens twice the price. In addition to the 1/4" attachment point at the end, it is covered with 1/4" and 3/8" points for attaching multiple accessories. Almost all other pens only give a point at the end. They look more ergonomic, but I find this grip more than comfortable. Open vents even add breathability. Very satisfied. The market needs to come up with a new design to improve this. Maybe make a thicker edge on the end plate to provide better grip and a It can also be cheaper, but the manufacturers of photographic equipment still increase the price.