COMPATIBILITY: Bicycle wheel hub axle M10 nuts for bike drum rear axle.ANTI-SLIP DESIGN: A flange nut has a wide flange at one end that acts as an integrated, non-spinning washer.NOT EASY TO LOOSEN: This serves to distribute the pressure of the nut over the part being secured, reducing the chance of damage to the part and making it less likely to loosen as a result of an uneven fastening surface.WELL-MADE: Made of high-hardness steel. The thread is smooth without burrs does, not damage the screw.PERFECT ACCESSORY: Suitable for bike screw with a diameter of 10mm, it will be the perfect replacement or DIY modification accessory.Colour: silverMaterial: steelSize: Height: 14.5mmPackage Contents:10 * NutsOnly the above package content, other products are not included.Note: Light shooting 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.