4X Bicycle E-Bike M15 Crank Arm Bolts ISIS Crank Screws Compatible with Bosch E-Bike Drives Brose
Special Features
- Made of high-quality steel, with high strength, rust resistance, and corrosion resistance.
- The screw head is sealed with plastic and does not require a separate crank cover, suitable for use with an 8mm hexagonal wrench.
- The M15 thread has a length of 13mm and a total length of 21mm.
- Used in the ISIS internal bearing crank system of bicycles.
- There are four in one package.
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