Simson Derailleur PTFE Spray 400ml is a high quality lubricant for derailleur mechanisms. Provides long-lasting lubrication which continues to operate under heavy load. Reduces wear because the spray significantly reduces friction between parts. Simson Derailleur PTFE spray forms a thin lubricating layer, has a fine structure and an excellent adhesion. The Simson Derailleur Spray PTFE is supplied in a 400ml spray can with an extra straw. First clean and degreas The chain with any of the Simson cleaners. Shake well before use and spray on the part to be treated. After a few minutes, remove the excess oil with a clean cloth.