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3D Printed replacement for the Bugaboo Donkey or Buffalo strollers. A common problem is the cable that attaches to this button breaks free. I do not believe there is enough plastic around the cable mount of the original part to give adequate strength and while I've added more to this design I'm limited to the space in which it fits. I fear this part will also fail in time so I'll offer a stainless steel version as well. First you need to open the hub by prying off the cover and taking out the 4 mm bolt. Take out disk, spring and the three fingered actuator. Tie a piece of string to cable incase you pull it up to far. Remove old button if it's not already out by twisting it up from the hub / cable side then slide back end out of the slot. Swap the black button and spring over to new release button and fit cable. Slide back end of button into the main slot via a small cross slot used by the black button, pull down excess cable then push front end of button down into the slot. Check cable and button work smoothly then reassemble hub. Note The nylon plastic used to print this part is naturally porous and this makes it very easy to stain, I apply two coats of Gloss white acrylic spray from a budget brand spray can visible visible the top "visible" part before using.