The multifunctional crank arm set is great for those looking to upgrade their bike's performance. Its robust construction and precise engineering ensure transfer and durability. Compatible with a wide range of bikes, including mountain bikes and electric scooters, this crank arm set is versatile and easy to install. Ideal for both professional cyclists and hobbyists, it enhances your bike's functionality, making every ride and enjoyable. Features -Color:Black -Material:Metal -Size:21.00X3.50X2.70cm/8.25X1.38X1.06in -Durable design: made from robust materials, these crank arms are built to last, providing reliable performance for both indoor and outdoor cycling activities -Precision fit: specifically designed for midmotor electric bikes, these crank arms offer a precise fit, ensuring efficient power transfer and smooth operation -Wide compatibility: these crank arms are suitable for various bike types, including stationary bikes, mountain bikes, and road bikes, making them a versatile choice for cyclists -Effortless installation: featuring an easytoinstall design, these crank arms allow for quick upgrades or replacements, great for diy bike maintenance -Enhanced cycling efficiency: with a length of 170 mm, these crank arms provide optimal leverage, helping you achieve better power output and improved cycling efficiency Package list: 2 x left and right bicycle cranks