Street Fit 360 Thorn Resistant Tube - 29" x 2.10 (700 x 50-52c) Schrader 48mm, Sunlite 2 Thorn Resistant Inner Tubes in their own box 29" x 2.10 (700 x 50-52c) Schrader 48mm 48mm Schrader Valve Replacement inner tube for a mountain, cruiser or other bike with the same tire size. 7 times the thickness of a regular inner tube