REGINA CHAIN 520HPE GG 112RS 135HPE/1005Eliminates the need of periodic re lubrication, while ensuring at least the same mileage obtained with a normal chain regularly lubricated every 310 miles, No time wasted cleaning the lube spatter from your bike, More power to the wheel, Money savings on lube, fuel consumption and bike cleaners, Environmentally friendly, For medium and small displacement motorcycles, Tetrahedral Amorphous Carbon (ta C) coating is an advanced DLC (Diamond Like Carbon)