Ready for accompanying you as you shred the mountain bike trails, this MTB inner tube features a butyl construction. This high-quality synthetic rubber makes it perfect for everyday riding, while its 0.9mm wall thickness combats against punctures. Manufacturer Part Numbers: 27.5" (650b) 1.5-2" Schrader: 1TA00029 27.5" (650b) 1.5-2" Presta 48mm Valve: 1TA00030 27.5" (650b) 1.5-2.5" Schrader 48mm Valve: 1TA00031 27.5" (650b) 1.9-2.5" Presta 48mm Valve: 1TA00032 29" 1.5-2" Schrader 48mm Valve: 1TA00035 29" 1.5-2" Presta 48mm Valve: 1TA00036 29" 1.9-2.5" Schrader 48mm Valve: 1TA00037 29" 1.9-2.5" Presta 48mm Valve: 1TA00038