Tetrahedral Amorphous Carbon (TA-C) Coating is an Advanced DLC (Diamond Like Carbon) Coating Applied on the Surfaces of the Bushings and the Rollers of the Hpe Chain, Commission High Hardness with a low coefficient, eliminates, eliminates, eliminates, eliminates, Mileage Obtained With A Normal Chain Regularly Lubricated Every 310 Miles, Reduces Energy Dissipation and Increases Efficiency in the Chain Drive, Eliminates Lubricant Spatter During Operation, Minimizing Environmental Impact, More Power to the Whe Therecer while ENSURING AT LEAST THE SAME MILEAGE OBTAINED WITH A Normal Chain Regularly Lubricated Every 500 km, Money Savings On Lube, Fuel Consumption and Bike Cleaners, Combines High Hardness With a Low Coefficient of Friction, For Use With Steel