Dr Sludge 27.5”/650B x 1.75-2.10 Schrader Inner Tube

£5.63

Now pre-filled into inner tubes in the correct dosage.

  • Prevents flat tyres
  • Seals punctures instantly up to 3mm diameter
  • Works time after time
  • Water based with anti-corrosion properties and is completely harmless
  • Inner tube and tyre will not stick together
  • Will not dry out regardless of outside temperatures
  • Every inner tube is individually tested before leaving the factory