WD-40 BIKE® Dry Lube, keeps the ride smooth when dust flies. The Dry Lube is specifically formulated for dry & dusty conditions. Polymers in the Dry Lube formula quickly form a dry film to protect your chain and repel dirt in arid or dusty conditions. Prevents friction damage and helps extend chain life. The no-wax formula will not build up inside chain links and drivetrain.