v1.6-v1.7 Module to merge multiple products into one

[prokill]

I am looking for a module to merge multiple products into one (such as combinations / attributes)
Let's say I have several products with different size, I would like to merge into one easily:

I have found this on the web Easy Product Merge
https://www.modulebuddy.com/product/easy-product-merge/

Someone got it or something similar?
Thanks.