Inner tube: NBR (Nitrile).
_x000D_Reinforcement: 4 spirally woven steel wires.
_x000D_Outer surface: Smooth, synthetic rubber.
_x000D_Very flexible, light and highly abrasion-resistant XtraTuff™ Plus surface.
Inner tube: NBR (Nitrile).
_x000D_Reinforcement: 4 spirally woven steel wires.
_x000D_Outer surface: Smooth, synthetic rubber.
_x000D_Very flexible, light and highly abrasion-resistant XtraTuff™ Plus surface.