This model is a dedicated Nicolai Eboxx Slapper, it's ment to be printed in TPU and then thermoformed on to the chainstay using heat. It's designed around the QLF chainstay but should be compatible also with KLF models produced later.
The idea is to glue it on using dual sided adhesive.
It's approx 10 cm long if you need to have a larger piece you can simply modify it in your slicer.
V4 has improved design and slots to help defomation at the base
The author marked this model as their own original creation.