• Increases chain life up to 2 times longer than standard O-ring chains. • X-rings reduce friction by up to 40% because of smaller contact area. • Lightening holes reduce weight whilst dissipating heat without sacrificing strength. • Large diameter heavy-duty pins, chromium carbide treated strengthen the chain, reduces fatigue and increases lifespan. • Shot peened, heat treated alloy steel side plates give maximum tensile strength and impact load resistance. • Available in gold. • 120 links. • Replacement master links available. • Made in Japan.