20 piece ACER Racing Aerospace Grade 6AL4V Titanium Lug Bolt set M12x1.5 thread, 28mm long thread, 17mm Hex Head, ball seat Manufactured from aerospace grade 6AL4V Titanium, these titanium lug bolts will not corrode or rust and offer a significant weight savings over steel lug bolts while giving a very sporty and aggressive look. Titanium is 50% lighter than steel, yet considerably stronger. Titanium is also resistant to the constant heating and cooling cycles that otherwise destroy steel studs and bolts. Rolled threads for superior fatigue resistance. Please compare the dimensions and photo with your stock bolt to ensure compatibility, the list is not exhaustive and this can be used for other applications that require the same size bolt.