HED 27.5 584x85 BIG HALF DEAL CARBON 32 BK/DISC TCBig Deal is 465 grams and 85mm wide of pure 27. 5` fat bike joy Tubeless compatible carbon fat bike rim weighing less than many smaller aluminum rims Inflatobam technology with Inflatabands provide a variable rim channel diameter which compensates for the discrepancies in tire bead diameters by minimizing the gap between the tire and the rim channels greatly reducing the chance of leaks and tire burps Twin channel rim design provides a better pre