A large flat edge on the bottom of the bead results in more surface area contact with the shelf of the rim. This increased surface area creates a more effective and secure seal for tubeless set ups. The surface of the entire bead is also smooth, reducing the number of small gaps that allow air to leak between the bead and rim shelf. Running your fatbike without tubes can reduce the weight of each wheel by 300 grams and provide a suppler ride quality. Always consult rim manufacturer instructions before setting up tubeless tires to ensure safety and compatibility.