The Miranda Delta Double Diamond Crank Set combines a scratched surface with a frontal machined surface that is smooth and shiny. The combination of these 2 different textures gives a sophisticated and technical look to the crank arm and also enhances its distinct design outlines. The cold-forging process used by Miranda, the high-quality aluminium and a process that allows to eliminate the weak spots and distribute the applied loads in an integrated way is what makes Delta Double Diamond crank highly resistant to fatigue and high impact tensions. Compatible with: Bosch eBike Active Line drive units (up to model year 2017) Bosch eBike Performance Line drive units Bosch eBike Classic+ Line drive units  -  here the M12 screws (art.: 2100706) have to be ordered additionally Miranda Delta Double Diamond Crank Set Technical Details Material: Cold forged aluminium ISIS Standard Miranda Delta Double Diamond Crank Set Includes Set of 2 cranks M15 screws