29" x 1.90 - 2.30 Mountain Bike Inner Tube. 32mm regular schrader valve with a removable core. Butyl rubber standard bicycle inner tube thickness. Fits a 29x1.90, 29x1.95, 29x2.0, 29x2.10, 29x2.20, 29x2.25 or 29x2.30. Also fits 700x 47, 700 x 48, 700x49, 700x50, 700x51, 700x52, 700x53, 700x54, 700x55, 700x56, 700x57 or 700x58. ISO/ETRTO is 622-47, 622-48, 622-49, 622-50, 622-51, 622-52, 622-53, 622-54, 622-55, 622-56, 622-57 or 622-58. THESE DIMENSIONS WILL BE ON THE SIDE OF YOUR TIRE FOR COMPARISON. BE SURE TO VERIFY THE VALVE TYPE REQUIRED.