High crotch for high performance freestyle. The convenience and ability to fold it up for easier storage is also great if you have wood or other scraps as the supports can be folded up increasing the chances of spilling or falling. which makes it easier to drop off. They are durable. And I love the fact that you don't have to replace the entire prop when bending a blade. You can easily replace that one blade. with some cool color schemes. Also, they just look sick no matter what. Especiallyβ¦