For eride/surron/ultra bee 2 titanium bolts Anodized/ PVD coated to perfection Increased corrosion resistance Made from certified Titanium Grade 5 6AL-4V Rolled threads for greater fatigue strength Greater strength to weight ratio than steel For x3 1 titanium bolt Anodized/ PVD coated to perfection Increased corrosion resistance Made from certified Titanium Grade 5 6AL-4V Rolled threads for greater fatigue strength Greater strength to weight ratio than steel For mx3/4/5 2 titanium bolts Anodized/ PVD coated to perfection Increased corrosion resistance Made from certified Titanium Grade 5 6AL-4V Rolled threads for greater fatigue strength Greater strength to weight ratio than steel