Dr. Sludge inner tubes are pre-filled with the optimum dosage of puncture sealant to prevent flat tyres. The tube contains a "slime" that seals punctures up to 3mm in diameter.

Suitable for mountain bike tyres 26" x 1.50 - 2.10 with Schrader (car type) valve

• 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