100% Brand new and high quality.They're a great for replacing stripped M18/M30crank arm bolts.Aluminum alloy material is anodized, T6 heat treatment, high strength, the thread is not easy to slip.The set of screws weighing 17 grams will not increase the weight of your vehicle.Note: The outer screw cover is a reverse thread, clockwise is loose, counterclockwise is tight, the inner screw is positive thread, clockwise is tight, please pay attention when installing and removing.colour: blackMaterial: aluminum alloyPackage Contents:2 x Crankset Bolts1 x GasketOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.