FRAMED Pro-X 80mm Fat Bike wheels are strong to keep you moving in any conditions. Built from 6061 Aluminum Alloy, single wall and drilled out for weight reduction without sacrificing strength. We build these up with 32 Stainless Steel spokes and our Sealed Alloy hubs. Will accommodate almost all 4 + inch fat bike tires on the market. Traction is brought to you by the Framed 26in X 4in 120 TPI tire; A great all around tread. Standard on the Alaskan Carbon.