Compatibility: M10 nuts of axis of bike wheel hub for rear axle of bicycle drum. Non-slip design: a flange nut has a large flange at one end which acts as an integrated washer which does not turn. Not easy to loosen: this is used to distribute the pressure of the nut on the part to be fixed, which reduces the risk of damage to the room and makes it less likely to loosen due to a surface of unequal fixation. Well made: made of high hardness steel. The thread is smooth without burrs, does not damage the screw. Perfect accessory: Suitable for bicycle screws with a diameter of 10 mm, it will be the perfect accessory for replacing or modification of DIY. Color: Money MATERIAL: Steel Size: height: 14.5 mmconted of the packaging: 10* nutsunically the content of the packaging above, the other products are not included. Note: Light shots and different displays can make the color of the element of the image slightly different from reality. The authorized measurement error is +/- 1-3cm.