2x Quality replacement wheelbarrow inner tubes for tyre size 4.80/4.00-8 Also fits 4.00-8 & 400x100 With FAST DISPATCH. Tubes are fitted with a TR13 straight rubber valve. The straight valve points in towards the axle so less risk of damage when in use. This 4.80/4.00-8 tube comes with a standard car type Schrader valve, which allows easy inflation using a normal car foot pump. Made from a high grade Butyl rubber these inner tubes have a double layer of rubber at the valve joint for extra strength. BEFORE FITTING check your tyre on the inside for THORNS or SHARP objects.