Feature:1. Aluminum Alloy Material: Made of selected aluminum alloy material, CNC cutting, anti corrosion and wear resistant, sturdy and durable.2. Exquisite Workmanship: The tooth pattern standard will not cause threads of different thicknesses, and the accuracy and strength are far better than the original plastic screws3. Lightweight Design: Crank screw has been designed many times to be compatible with strength and light weight, making riding easier.4. Scope of Application: The screws are suitable for hollow one piece crankset, for FSA crankset and the old for FC4500 and for FC5600 road cranksets and other road bikes, mountain bikes.5. Applicable People: Good processing with good texture can ensure a long service life. Bike crank fixing bolt is a great accessory for bicycle enthusiasts.Specification:Item Type: Bicycle Crank Arm ScrewProduct Material: Aluminum AlloyWeight: Approx. 12g / 0.4ozProduct Size: Approx. 2.8cm / 1.1in.Package List:1 x Crankset Arm Bolt