PJ1 Blue Label O-Ring Chain Lube applies easily, penetrates and protects O-rings to keep them moist and pliable. Reduces chain friction and shock resulting in less wear and fewer adjustments. Protects against rust and corrosion by displacing and repelling water. Petroleum based clear formula wont fly off, extending O-Ring chain life, and protecting sprocket surface from wear with a cushion effect between the rollers and sprocket. Optimized for ‘O’ Ring Chains to create minimal rolling resistance.