Made of 7075 aluminum alloy, crank bolt is durable, rust-proof and corrosion-resistant, which is not easy to break or damage, and can be used for a long time. The crankshaft cover screw are processed by high-precision CNC, with a burr-free appearance, standard thread, perfect fit for the crank, and provide professional crank fixation, effectively preventing water and dust from entering. Designed for fixing the the chainrings and cranks of the crankset, suitable for mountain bikes, road bikes and other bicycle types, and can distribute the pressure of the nut to the fixed parts, thereby reducing the risk of component damage. Note: When installing the crank bolt, make sure to tighten it moderately, not too tight or too loose, so as not to affect the stability of the bicycle cranks.
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