Stan's No Tubes Flow MK3 Wheelset Review | Tested,STAN'S NO TUBES FLOW MK3 27.5” Rear Wheel & Maxxis 27.5*2.50 & Stans Hub,ZTR Flow EX Rim (29-inch),Stan's No Tubes Flow MK4 Rim,Stan's No Tubes - JetBlack Products, Ride faster, harder & have more fun