The Arch MK4 rims from Stans are designed with an asymmetric shape and offset spoke holes. This design improves the angle of the spokes and creates a stronger all-around wheel. Unlike other asymmetric rims, these rims do not have issues with inflation or tubeless performance. The BST-Asymmetric design ensures that the wheel is strong without compromising on tubeless performance.These rims have a versatile 28mm internal rim width, making them optimized for 2.2-2.5 inch tires. They are made from lightweight and durable 6069 aluminum with welded joints and a reinforced spoke bed.The Arch MK4 wheels feature M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66° engagement. The hubs have Enduro bearings with a double-row freehub bearing. The wheels are also easy to service, as they use traditional J-bend lacing and have a single spoke length for all matched wheelsets.When you purchase these wheels, you also become part of Stans' Connection program. This program includes a 5-year hub warranty, 3-year rim warranty, 1-year crash replacement, and a $10 donation to a trail maintenance or advocacy group of your choice.Upgrade your bike with the NoTubes Arch MK4 Wheels 6B - 29' wheels from Stans, and enjoy a stronger and more balanced wheel build that delivers excellent tubeless performance.